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Engine Specific Info and Questions => Non VW Group Diesel => Topic started by: maxfax on November 17, 2009, 01:27:36 am

Title: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 17, 2009, 01:27:36 am
The vehicle in question is a '98 K2500 Silverado..   It's sporting about 155K miles, and is clean..   I mean really friggen clean! No dings, dents, chips, rust, stains, leaks, rattles, or funky smells inside..   I would say this would be a $5000 vehicle on a dealer lot rather easily IF it ran right..

This guy was a dealer kinda guy, he had it all done there right down to tires and oil changes..  ABout a year ago it was stalling, hesitating, starting hard..  THey replaced the IP with a reman..  8 months later the prolem returned, the dealer sent the IP out again and under the 1 year warrenty they fixed it....   Now  about another year later it's right back to where it was to begin with..  I've not had alot of experinece with these things it sort of sounds to me like the fuel solenoid driver (aka pump mounted driver) has taken a poo..  I think that may have been the issue the other two times as well from what was described...  I have to wonder if whomever is rebuilding these pumps is actually putting a new PMD on there or not..

Well at this point in time the dealer wants to stick another pump on it..  The owner isn;t sure he wants to sink any more into it..   So out come the sales guys trying their darnest to make him a deal on an '09..   THey offered him $1300 trade in on this thing..   Since he's rather discusted with how the dealer has been handling this he's not sure what he's going to do yet..   Either I may get it to play with and see if I can fix it, (I'll be replacing that PMD right off) or he's gonna buy the '09 and sell this one private.. From what I have gathered he'd sell this thing for $1800..

Not that I have the extra $1800 around but I think I could find it somewhere..   I know the duramax is pretty rock solid, but I just don;t know so much about the 6.5 other than the electrical bugs..  Thoughs, opinions????
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Rabbit on Roids on November 17, 2009, 07:50:16 am
you need the PMD relocator. and a few other pieces. heathdiesel.com is 6.5 heaven. they have everything to make them reliable. my grnadpa has a 95 or 6 chev 3500HD truck. 6.5, got it for a song. turbo doesnt work, but the rest of the truck runs pretty good. look into the pump driver tho, i know they make relocation kits for them so they are down by the front bumper or up on the firewall. either way they dont burn up when they are relocated. but they do when they are in the stock location.

http://www.heathdiesel.com/T/Chevy-GM/Chevy-9601/PMD-Isolators/ (http://www.heathdiesel.com/T/Chevy-GM/Chevy-9601/PMD-Isolators/)

and then about half way down on this page.

http://www.dieselcare.net/CHEVROLETPRODUCTS.html?gclid=CKv54tmxkp4CFRhfagodNkm5oQ (http://www.dieselcare.net/CHEVROLETPRODUCTS.html?gclid=CKv54tmxkp4CFRhfagodNkm5oQ)
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 17, 2009, 07:59:06 am
Thanks for the info ROR..    I was reading about those in brief..   I thought one woudl be worth it if for no other reason than not having to remove the intake to change the darned thing..  But it does make alot of sense to me to relocate the thing..   Another "smart engineer" was at work when they placed the thing...
 
 I was looking though his recipts, and by some stroke of luck the pump rebuilder made note of which resistor was used on this one..  I won;t even have to deal with the one on there now, other than unplugging it... 

Took a crawl under the thing this morn..   Damn is it clean under there..   Slight oil leak from the filter elbow but otherwise really nice..    I kinda hope he opts to dump this thing...
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Rabbit on Roids on November 17, 2009, 08:13:32 am
that would be sweet.

i guess you can get right about 300 horses out of these and still have them be a fairly reliable rig. these 6.2 and 6.5 engines have a very unique sound all their own. they almost sound like a big block V8, but they just dont turn the R's. speaking of 6.2's, i watched an idiot burn one down in the mud last week. had sparks shooting out the tail pipes.. just bouncing it off the governor. the tires would grab and it would get real loud, then they would slip again and it would just sit there bouncin off the governor again. pretty sure he was getting ready to have a complete meltdown on a pre-cup or a piston.. then right after the sparks, he shuts it off. bad idea... i told him to keep it idling to cool it down. he went to fire it back up and it slowly groaned and turned over. the cooling system was pressurized, but 3-4 mins later it was done hissing. im pretty sure the HG's were toast also.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 17, 2009, 03:33:38 pm
Hmm sparks outta the exhaust..  Yeah no good had to come of that..  Did he WANT to walk home??

I gotta say it does have a nice sound to it..  It would be better with the muffler removed...  Different from the Ford v8 diesels though..

It's been ages since I drove a GM built diesel, but I remeber the 6.2 being painfully gutless..  I was rather young but I rmeber alot of the 6.2 powered trucks coming into the shop for head gaskets, or to simply be replaced..  Dad swapped alot of dead 6.2's for gassers back in the day..   I wasn;t sure how the 6.5's faired...

At this point the truck is sitting in my driveway...  We went down to the dealer to get it this afternoon...   All my reading kinda pointed to the 6.5 being a bit of a slug, but I didn;t think it felt too bad for stock form..   At least till it started acting up..  It's text book PMD failure...   I haven;t gotten the word yet if he's selling or fixing.. 
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: burn_your_money on November 17, 2009, 08:22:14 pm
The resistor number doesn't make much difference. Just as long as you have one in there it'll be fine.

From what I've seen of these 6.5 pumps I would never own one, but then again no one sends us a good working pump to rebuild
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 17, 2009, 11:46:53 pm
I'm guessing you get alot of pumps with major issues??  I have read about alot of people replacing pumps, but I wasn;t sure if it was due to pump failure, or in this truck's case a DOA PMD...   This brings me to another question I've been toying with, can the 6.2 pump be molested to work on one of these??  At least aside from the obvious that I'd need some throttle linkage and some means to control the trans....
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Rabbit on Roids on November 19, 2009, 09:21:06 am
bolt a mechanical 6.5 pump on there. anything before 95 had a mech pump.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: catlin_cava on November 19, 2009, 01:43:18 pm
My bro had a 96 with the 6.5L and will never own another one again.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 19, 2009, 08:03:32 pm
Catlin, why is that??   Was it fuel system issues, or major engine related problems???
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: OM617 on November 20, 2009, 01:05:46 am
The 6.5 eats pumps every 100k miles. My grandfather used to tow a gooseneck for an Oklahoma newspaper printer and it would eat pumps like clockwork. Other than the pump, poor towing power and being a GM product, it was a decent truck.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Rabbit on Roids on November 20, 2009, 09:44:57 am
adding some sort of lubricity enhancer would most definitely make the pumps last longer. hell, the diesel we are running now is probably almost as bad as the liquid glass they run through the engines of "cash for clunkers" engines. im just glad that no VW diesels had to die from that program. the vehicle had to get under 20 mpg or something to qualify. any VW diesel getting 20 MPG either has almost 500 horsepower, or is so worn out that it needs to be crushed. LOLZ
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 20, 2009, 01:01:21 pm
Pump replacement is what I've been hearing the most about..  I guess it's more than just electronic failures in the pump..
And yes it is a GM product, GM built diesel powered no less..

I haven;t gotten a final word but it sounds as though negotiations on a new one aren't going so well.. He gave me the go ahead on the PMD and relocation kit regardless of what he decides...  I guess after that gets here I can take it on a good run and see how I feel about it..  If I like it I'm sure he;ll want to keep it..


Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Wayland on November 20, 2009, 02:10:33 pm
FWIW, I was seriously considering buying a GM van w/ a 6.5. At the last minute I changed my mind and bought a first gen. Dodge CTD. Since then I've passed at least a few dead GM diesels sitting on the side of the highway. No trouble at all with the Cummins though.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: catlin_cava on November 20, 2009, 03:15:37 pm
Catlin, why is that??   Was it fuel system issues, or major engine related problems???

Fuel System all the time...
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 20, 2009, 04:38:12 pm
Well then, at least I know what I may be getting into..   So how about the mechanical 6.5 pumps that were mentioned earlier??  Anyone have any info on those?

Wyland, if this truck had a Cummins in it I'd be all over it..   However I don;t think I'd touch another Dodge..  Too many bitter memories of the last one..   I had an '07 3500 HD with the 6.7...  Awesome power, and the potential to be a great engine but the rest of the truck was a night mare..    Had I kept it till I was out of the engine warrenty I would have dumped the emissions controls and I think the engine at least would have been fine..   

In 07 it was a 3 year 36,000 mile warrenty on the truck, 100K on the engine..  By 56,000 it had 2 Turbos, 6 Transmissions (excluding the original..   Brand new every time) Complete front end rebuild including wheel bearings ball joints and tie rods, rear diff rebuilt..  Countless PCM re flashes, and It was strange to NOT have a CEL.. THe only things I didn;t pay for were the 2 turbos and 5 transmission jobs....  At best it got 14mpg..  Since most everything fell apart out of warrenty I didn;t even have lemon laws to fall back on..   I though I was going to end up paying for the last trans I put into it as Chrysler was starting to get grumpy about replacing them all the time..  If they would have just fixed the thing....... >:(
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: burn_your_money on November 20, 2009, 05:22:33 pm
If you switch to a mechanical pump and ditch the electronics you will need to hook up a real wastegate to the turbo. Stock has a vacuum actuated one.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: burn_your_money on November 21, 2009, 05:38:12 am
These pumps have been good to fuel shops. GM says that it's only because of the amount of trucks on the road and that the failure percentage is actually low. That's what GM says anyways...

Stanadyne has done a lot of updates on the pumps over the years. The old ones had a few critical weak pieces in them but those have pretty much all broken by this point. Now it's mainly an issue of the electronics in the pump failing, usually because of too much heat. Mechanical failures are fairly uncommon.

We do get the odd guy in the shop with a truck that still has the original pump on it and it's still running great.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Rabbit on Roids on November 21, 2009, 11:37:24 am
they are a pretty good engine with an extremely terrible pump.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 21, 2009, 05:47:14 pm
That's what GM says anyways...

Yeah..   I learned long ago not to believe anything they say.. My personal fav being "You don;t have to check or change tranmission fluid ever"   ::)

So are you saying that if the pump has been rebuilt and all the updates are done it should be okay??  Other than the electronic issues...

I got the new PMD and relocation kit today (wow that was fast)..   I kinda hate to stick it on and tell the guy his truck is working as he may want to keep it..  :-\  But I guess I might as well to make sure I woudl want to buy it...
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: OM617 on November 21, 2009, 06:04:48 pm
I had an '07 3500 HD with the 6.7.
....
In 07 it was a 3 year 36,000 mile warrenty on the truck, 100K on the engine..  By 56,000 it had 2 Turbos, 6 Transmissions (excluding the original..   Brand new every time)
You should have used the lemon law.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 21, 2009, 06:27:00 pm
You should have used the lemon law.

I would have, but PA lemon law states the problem has to happen within the first 12 mo or 12K miles..  The original trans died at about 38,000 miles  RIght out of warrenty of course..  The other transmissions were replaced under the trans warrenty...

 I should have found another dealer after about the third one..  I knew it had to be a problem within the truck itself, but they claimed to check it over and find nothing wrong..  After a round of nasty phone calls I got it towed to another dealer about 50 miles away for the last trans... They replaced the trans, control module and wiring harness..   I kept it till about 80K when the thing started to slip again when hot and under load..  

I changed the trans fluid, cleared the DTC's, towed it within a half mile of the dealer I bought it at.   Drove it the rest of the way there, left them check it over and gave them my service records..  Got it paid off and an extremely reliable gasser F-250, with a MANUAL transmission....  Hmm that might have been a bit shady.. ;D
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Turbinepowered on November 22, 2009, 04:18:21 am
These pumps have been good to fuel shops. GM says that it's only because of the amount of trucks on the road and that the failure percentage is actually low. That's what GM says anyways...

...

We do get the odd guy in the shop with a truck that still has the original pump on it and it's still running great.

See, GM just had it backwards! Their success rate is actually low, and the fail is strong with the pumps. :D
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: catlin_cava on November 22, 2009, 09:35:11 am
These pumps have been good to fuel shops. GM says that it's only because of the amount of trucks on the road and that the failure percentage is actually low. That's what GM says anyways...

...

We do get the odd guy in the shop with a truck that still has the original pump on it and it's still running great.

See, GM just had it backwards! Their success rate is actually low, and the fail is strong with the pumps. :D

GM...Success...In the same Phrase??? I've never heard of it....
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: burn_your_money on November 22, 2009, 09:42:17 am
So are you saying that if the pump has been rebuilt and all the updates are done it should be okay??  Other than the electronic issues...

Yes but the electronics are a serious issue. If you do get a pump rebuilt, make sure that they use a brand new GREY box and brand new OEM optical sensor. The Grey box is stanadynes latest update, military spec, gold plated terminal blah blah blah. They haven't been out long enough to see if they are really any better then the old ones though.

Personally I would switch to mechanical. Those electronics in the pump are big bucks
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 22, 2009, 10:42:43 am
I don;t know what exactly was used in this pump rebuild..   I've read the optional (err optical) sensor was problematic as well..   GM seemed to have a fetish for optical triggers that didn;t work back in that era.. I still wake up in a cold sweat from Opti-Spark (Optional Spark) ignitions...  I guess time will tell how good this rebuild was..  I still think they sent the pump back with a used PMD on it, it just doesn;t look like a 6 month old part that had been run less than 3K miles.....

I did get the grey PMD for it though..   Cheap they aren't..  But not much worse than the black one..  I've heard from alot of happy people that bought the relocation kit so hopefully that'll help..  Once again time will tell..


Took it a ride today and it seemed fine so far..  Pretty sure that'll take care of it for now..    The current owner bought it new with absolutly no problems for 150 some thousand miles..  That is till last summer when the pump took a poo..

I think if I end up with it I'll start scrounging parts for a mechanical swap right off..   So far on the list I got pump, waste gate control, throttle linkage, and trans controller...  I haven;t looked to see if I need a glow plug controller..   Then again a push button could remedy that...
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Rabbit on Roids on November 23, 2009, 08:43:03 am
***, i forgot that that truck has a 4L60-E in it, or more likely, a 4L80-E. both of witch are electronic controlled and probably have to be hooked up to the pump or throttle pedal. i know they dont have kick down cables or vac. modulators or anything. so that could be problematic. unless you got a stand alone controller. pretty sure painless makes a controller, not sure if it would work on diesel trans's tho.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 23, 2009, 06:09:56 pm
Yes this one does have the 4L80E..   There are a several stand alone controllers available for these..   The 4l80E should have been available with the non electronic versions of this engine, so the harness and pcm woudl work from one of those... 
 In actuality I *think* I could get the existing pcm to continue to control the trans as long as I were to have some variety of TPS..  The inputs needed for the trans to work would be coolant temp, map, throttle postion, vehicle speed, and RPM..  All of these woudl still be available.. Yeah there would be DTC's for the fuel system but none of these should affect the trans adapts.. 

As of now I have the truck to try out..   He bought a new one to try under the 60 day return deal GM is offering.. He ended up with a 2500 gasser..   I suspect he may not like the gas milage too much..

I took this 98 for about a 3 hour run this morn..   Definitly no hot rod but not that terrible for power.. Definitly not the 6.7 Cummins..  Managed 24mpg outta the thing too.. Once again nothing like the 14 the Cummins got.... I've never been much of a GM fan, but all issues aside it's a darn nice truck to drive, comfy too..   THe only real issue with it at this moment is that it's too nice..   I was gonna haul some junk to the scrap yard tomorrow..  I think I'm gonna have to use the old Ford though, don;t wanna bang this one up..  I had to take the VW to go for parts this afternoon, I was too greasy to sit in the Chevy..   ::)
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: lord_verminaard on November 24, 2009, 07:17:58 am
Just swap the auto for a manual.  The tranny will be the next thing to die after the pump.  :D

Like others have said, great engine, bad.... everything else.

Brendan
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 24, 2009, 07:40:48 am
The 4l80E is pretty robust..   Even the 4l60E wasn;t too bad post '96..  Of course proper care has alot to do with it too..  This one's been serviced on time and had an aftermarket cooler installed since new.. Judging by the shift adapts and CVI there's 70% + of the clutches left..  

If it came to a new trans or finding the stuff and swapping to a manual it'd probably be cheaper  and easier to rebuild the auto..

I guess I'm getting old or something, automatics keep becoming more and more appealing....  Mopars excluded..
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: burn_your_money on November 24, 2009, 10:04:14 am
Stanadyne introduced the grey box around July of this year. It can't be any older then that unless you guys in the south got them before us, but that seems unlikely.
The mechanical 6.5 pumps did come with the TPS if it was from an auto.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 24, 2009, 10:18:23 am
The one that was giving problems had to be the old style then..  The replacement I got is supposed to be the lastest update..  They guy mentioned something about them just becoming available a few months ago..  ???  Eh if it takes a poop again the mechanical route sounds like the way to go...

The mechanical 6.5 pumps did come with the TPS if it was from an auto.

I was wondering about that, good to know.. 
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: catlin_cava on November 24, 2009, 02:01:39 pm
FOund out today the job I may get (if the insurance company allows me) The truck I'll be driving has a 6.5L in it. I made the joke and asked if I could use the Internation with the Cat in it lol
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 24, 2009, 11:22:31 pm
FOund out today the job I may get (if the insurance company allows me) The truck I'll be driving has a 6.5L in it. I made the joke and asked if I could use the Internation with the Cat in it lol

There's a guy here locally running a '63 Chevy 3/4 ton powered by a 4-71 Detroit... Top speed's about 60 but it will pull anything at that speed..  No power steering, no power brakes, heck not even disc brakes.. Talk about some strong arms and legs..   At least it isn;t 3 on the tree anymore...
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Rabbit on Roids on November 25, 2009, 09:45:19 am
Just swap the auto for a manual.  The tranny will be the next thing to die after the pump.  :D

Like others have said, great engine, bad.... everything else.

Brendan

you know nothing about GM i can see... they basically took a turbo 400, beefed it up, made it electronic controlled, and added an over drive. how are you going to kill a 4L80 with a gutless diesel if you cant kill one with a fire breathing blown 454?
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Rabbit on Roids on November 25, 2009, 09:47:05 am
The 4l80E is pretty robust..   Even the 4l60E wasn;t too bad post '96..  Of course proper care has alot to do with it too..  This one's been serviced on time and had an aftermarket cooler installed since new.. Judging by the shift adapts and CVI there's 70% + of the clutches left..  

If it came to a new trans or finding the stuff and swapping to a manual it'd probably be cheaper  and easier to rebuild the auto..

I guess I'm getting old or something, automatics keep becoming more and more appealing....  Mopars excluded..

i still dont care for automatics. the funnest autos ive ever driven had turbos in front of them. its cool being able to spool up the turbo a little, then let off the brakes and firewall it.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 25, 2009, 10:34:55 am
All depends what I'm driving..    I like the auto in the Chevy, but in the F-250 I'm glad for the manual..  Especially behind a wheezy little 5.0..   

Auto transmissions have really come a long way..  Utilizing electronics to shift them was the best thing they did IMHO..  Yeah they had some issues the first few years, Chrysler still has them..  ::) But once the growing pains were out of the way they work pretty darned good..

My mustang has been through various changes..   Started as a C-4 then went to an AOD..  THe AOD held up but shifted horribly, and modifications to the valve body all the time are a pain..  Went to a 5 speed, broke several 5 speeds, went to a 4r70w (wide ratio AOD-E).. I'm extactic with that..   A few quick flashes to the controller and BAM it shifts perfectly every time..  Aditionally if I want it more or less agressive it's a simple flash to the pcm..  I can even set it for full manual shifts... Knock wood I haven;t broken it yet...


Now a VW with an auto, well it isn't a VW, end of story...
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: lord_verminaard on November 25, 2009, 12:07:06 pm
you know nothing about GM i can see... they basically took a turbo 400, beefed it up, made it electronic controlled, and added an over drive. how are you going to kill a 4L80 with a gutless diesel if you cant kill one with a fire breathing blown 454?

You know what?  I'm starting to think that you don't know much of anything about anything.  You always act like you know it all about every topic that comes up and you always need to have the last word.  Well, the truth is, I've worked on and off in the automotive service/parts industry for nearly 10 years, almost half of your entire life, and I've personally sold more rebuilt GM automatic transmissions than you have probably ever even laid eyes on.  I was a true GM fanatic, I rebuilt my first 350 when you were only 8 years old, then I grew up and got a brain.

Frankly I'm sick of your attitude and I doubt I'm the only one.  I wish this forum had an ignore feature because you would be the first person on my list.

Sorry to the original poster for letting this get on your thread.

Brendan
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: burn_your_money on November 25, 2009, 02:25:09 pm
Ok that conversation stops there. Take it to PMs if you feel it necessary.

Back to the 6.5,

If your pump originally had a black box on it you need to swap the pump wiring harness to the new style in order to upgrade to the grey box.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: catlin_cava on November 25, 2009, 03:40:41 pm
What year the GM Fix the 6.5 so they are reliable?
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 25, 2009, 09:30:25 pm
If your pump originally had a black box on it you need to swap the pump wiring harness to the new style in order to upgrade to the grey box.


Hmm..  Well I bought the relocation kit which came with about a 6 foot harness that plugged into the original pmd connector and into the new pmd..   

Upon a bit of inspection the pmd I installed was not made by Stanadyne. It's labeled "D-Tech" manufactured by Flight Systems ELectronic Group.. It uses the same connector as the Stanadyne PMD..

I guess it can;t be much worse than the Stanadyne unit...  It's made it about 700 miles so far.. I kinda wish teh exhaust was a bit smokier (isn;t that half the fun of owning a diesel??)) but it's been knocking out low to mid 20's for fuel milage so I'm not going to complain...

Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: burn_your_money on November 29, 2009, 06:34:03 pm
The Dtech box is a good one. It's better then the original Stanadyne black box. I'm not sure how it compares to the new grey box yet though. Do you have a resistor in your black box? Most trucks will throw a code if you don't have one installed but some seem to get away with it.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on November 29, 2009, 07:32:21 pm
That's good to hear!!!   This one does have the resistor in the black box..   The instructions with the Dtech box mentioned about swapping that..  I was lazy and just bought another one so I didn't have to try get the old one out..  $7 was well worth it to not have to remove the intake..  I just left the black box hanging on the pump as with the relocation kit there was no need to remove it..   

That relocation kit is truly the part of gold in this mess..  I'm sure the cooler location helps, but also it's simple enough to change the PMD now that one could theoretically keep a spare with them and change it roadside..  Kinda brings back memories of the good ole days with Ford Duraspark modules..
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Pat Dolan on December 12, 2009, 03:06:50 pm
Doesn't sound like you need any encouragememt to pick up this truck, but if you do:  I have been driving a '97 K15 6.5 for a while, and I think I will keep it.  I've got bigger stuff for big towing/carying, and little stuff for hauling my keister around, but find the Chiverlay "about right" for dragging one car and carrying a half ton of junk at a time.  I have had a 5.7 pickup (that's what your Daddy was replacing) and 6.2 Suburban, and each one has been fantastic transportation and dead reliable.  I get about 20 imperial MPG towing one light car, and it seems to be just "car like" enough for Mamma to drive without too much grief.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on December 13, 2009, 07:15:14 pm
You hit the nail on the head Pat..   It's truck enough for what I need to do, car enough that's it's nice to drive if I'm going any distance...  I've had posession of it for almost a month now and am quite happy with it..

 The only real down falls are that it's too darn nice to go chucking firewood or scrap on the bed and it's not technically mine yet..   THe PO, well current owner yet, is trying out a new truck on the GM 60 day thing..  I guess he isn't unhappy with the new one, but not thrilled with it for what it's gonna cost..  He's pulling a small cattle trailer.. The 5.3 does okay, but power and mileage were better with the 6.5..  And since this one now seems to be working fine he's debating about just keeping it..  :-\   I guess I don;t really need the truck and I could use the money elseware, but it is pretty darned nice..    I guess if he decides to keep it I'll continue my search for a diesel Olds wagon
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Rabbit on Roids on December 14, 2009, 09:33:24 am
so, hes going to pay you for fixing it right? if he doesnt i would kindly give him the truck back just like you got it. and keep your PMD and relocation harness.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on December 14, 2009, 10:25:18 am
THe original deal was for me to fix it, and drive it a few weeks to make sure it works, and he'd pay me for fixing it..  Now the deal is, if he decides to keep his new truck I keep this one and give him $1800..  IF he decides he wants this old one back he pays me for fixing it..
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Rabbit on Roids on December 14, 2009, 10:57:46 am
yes. that sounds like a good deal. least you arent going to get completely ripped off if he decides to keep the truck. and if he wanted something comparable to a diesel, he should have bought the 6.2 vortec. it has plenty of power. 403 horses to be exact. but who knows how good of mileage it gets.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Pat Dolan on March 12, 2010, 07:11:03 pm
Maxfax:

You and I seem to have the same goals - and darn near the same truck!  I have the same problem with the '97 - just too nice to beat up on, and has 200,000 kms (130,000 miles).

Two comments: I missed your oil leak comment when I first read this thread.  The filter elbow has a pair of 0-rings - and GM wants a FORTUNE for them (may not exactly be a "normal" size) and they bake in the heat down there and are brittle as glass.  Did mine last month.  Head for the car wash and blow the crap out of the area around the filter (take a pair of wheel ramps and creeper with you) and it will be a pleasant task when you are under there to fix.

Second:  I have an electrical glitch that I suspect is casused by one genuine deficiency in this truck:  the electronics in the ABS are famous for failing - there is a relay in there that will stick and drain the batteries, and the solder joints fail with time and vibration.

Finally:  Don't wait for the Olds diesel.   MY ultimate 2WD wagon would be a '94 Caprice with the 6.5 and 480LE stuck in there.  Now, I just need a rust free car and a low mile 2WD rusty or bent truck and I'm golden.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on March 12, 2010, 08:37:27 pm
You know, I've barely driven mine..  My father used it a day when I first got it, and I've barely seen it since..  :-\  At least he's keeping it clean..  He got a list of "do not do's" with it..  ;D   I've still been very happy with it..   It hasn't missed a beat with the D-tech PMD and relocation kit..  The PO is kinda sorry he parted with it now..

I priced the o-rings, yeah I expected them to be a bit pricey..  I found them online for about $30 shipped which doesn't seem TOO horrible..   Once the weather stays nice for a bit I plan to give the whole underside a good cleaning and take care of the leak..  THe exhaust crossover pipe is looking pretty crusty too..  I may have that addressed as well..

GM electronics in general seem to be rather failure prone..   Back in the day Mopar and Ford ecm failures were unheard of, the autoparts kept most GM ecm's in stock..  TO this day they still seem to have ABS and electrical gadget issues..  I'm glad that this truck doesn;t have ABS though..   I probably would have unhooked it if it did.. 

I watched several Olds diesels come and go.. Couldn't believe the price they brought..  You may have something with the '90s Caprice wagon with a 6.5 ..    Oddly enough I bought something for $400 last month

(http://i295.photobucket.com/albums/mm124/maxfax3/93%20Caprice%20Classic%20Wagon/DSCF2006.jpg)

I hate to screw with it though..   It's got the 5.0L which will live forever and just a tad over 100,000 miles on the clock.. Maybe when I blow the trans out of it an upgrade would be something to consider...

Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: theman53 on March 13, 2010, 04:54:17 am
Man I love the wood wagons. Reminds me of the old ford country squire that had the 460 in them. I loved those cars. Buddy had one in high school I think we could comfortably fit 9 passengers with the rumble seat...until we took as much as we could out of the back and had a mattress in there  ;)
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: 8v-of-fury on March 18, 2010, 08:47:11 pm
Is that a poor rabbit i see buried in your picture there Brett? that s a sad fate. That is a nice woody you got there ;)
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on March 19, 2010, 08:06:17 pm
That's not a poor Rabbit..  That's my full coverage auto insurance..  ;D  That was a freebie last spring..  Been sitting for eons..  THe interior is crap, dunno a thing about the engine, and I haven;t been able to get my hands on a title yet.. But the body is pretty straight and solid.. (I'm surprised since there is moss growing int he carpet)   If anything drastic ever happens to the silver bunny it's next in line...  I had it tucked in a shed till the shed went down after the snow.. (It dodged another bullet)..  Hopefully I'll have it back in the dry by summer...

Even though it is a Chebby I'm quite tickled with the woody..  I've wanted a wagon since high school..  They were either too much $$$ or crap..  The one I've had my eye on particulary the guy won't sell me because "I'll get in trouble with it".. It's a baby blue 1968 Country Squire (with wood grain) and a 428cj 4 speed..   All from the factory... I could see why he wouldn't sell it to me when I was 17, but geez I'm old enough now to know how to behave.....Maybe...  ;D

A few years back I picked up a Pinto woody wagon that someone had swapped in a Benz OM615 and 4 speed..  Damn nice swap job till they tried throwing a turbo at it..  Never drove it as it barely had enough compression to smoke.. With too many projects going I ended up trading it for a Perkins engine to drop in my Oliver Crawler..
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Rabbit on Roids on March 26, 2010, 07:31:54 am
That's not a poor Rabbit..  That's my full coverage auto insurance..  ;D  That was a freebie last spring..  Been sitting for eons..  THe interior is crap, dunno a thing about the engine, and I haven;t been able to get my hands on a title yet.. But the body is pretty straight and solid.. (I'm surprised since there is moss growing int he carpet)   If anything drastic ever happens to the silver bunny it's next in line...  I had it tucked in a shed till the shed went down after the snow.. (It dodged another bullet)..  Hopefully I'll have it back in the dry by summer...

Even though it is a Chebby I'm quite tickled with the woody..  I've wanted a wagon since high school..  They were either too much $$$ or crap..  The one I've had my eye on particulary the guy won't sell me because "I'll get in trouble with it".. It's a baby blue 1968 Country Squire (with wood grain) and a 428cj 4 speed..   All from the factory... I could see why he wouldn't sell it to me when I was 17, but geez I'm old enough now to know how to behave.....Maybe...  ;D

A few years back I picked up a Pinto woody wagon that someone had swapped in a Benz OM615 and 4 speed..  Damn nice swap job till they tried throwing a turbo at it..  Never drove it as it barely had enough compression to smoke.. With too many projects going I ended up trading it for a Perkins engine to drop in my Oliver Crawler..

thats some funny stuff there!
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on March 28, 2010, 05:43:57 pm
SOB!!!   I finally found what I've been looking for.. 

http://harrisburg.craigslist.org/pts/1665600804.html (http://harrisburg.craigslist.org/pts/1665600804.html)

And yes I do want a GM 350 Diesel.... I love a challenge..  If all goes to plan I'm going to look on Tuesday..
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: Rabbit on Roids on March 28, 2010, 05:59:14 pm
take and bolt 2 hair dryers on a 350 diesel? that should lift the heads off it nicely.
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: maxfax on March 28, 2010, 06:26:48 pm
It can be done, reliably, and reasonably priced.. Although I really don't wanna deal with turbo's..
Title: Re: Lookin at a GM 6.5L Diesel maybe possibly..
Post by: burn_your_money on March 28, 2010, 07:00:25 pm
Although I really don't wanna deal with turbo's..

That's the spirit :)
Title: Bought the 6.5L GM Diesel, now looking at a 5.7L GM Diesel
Post by: maxfax on April 01, 2010, 03:13:10 am
I went and took a look at the oil burnin shaggin wagon Tuesday night..  Excluding engine issues it wasn't bad.. Before I even saw it he admitted that there was coolant in the oil and it had gotten hot when they tried to baby it home..   :(  I guess it isn't so bad since I figured on yanking the engine and at the least replacing fasteners, rings and bearings..  But now I worry about cracks if it was really hot..

Thinking back maybe I should have just passed on it all together (it's not like I don;t have enough other stuff sitting that doesn't work)..   I ended up offering $400 for it, which is about the current value in scrap..  He had a few others interested in it, so he took my number and will let me know today or tomorrow..