1984 Jetta , TDI WE MUST! (1.9 AHU M-TDI)

[8v-of-fury]

OK so I got in contact with this guy, and he says the car does not run because it requires glow-plugs. He told me he replaced the glow-plugs and the car will still not start.. Judging by the fact he still does not have the car running, shows to me he has no idea what he is doing.. He told me he had the car running one day, shut it down for about a half hour.. came back and it would not start.. now that I really think about this, if the engine were ran half hour ago it would start with zero plugs working.. wouldn't it?

So I figure if the TDI's are anything like the IDI's, jumping a 12v to the stop solenoid (is there one of these on a TDI?) and 12v to the glow plug circuit.. it should be failry easy to give a quick on the spot diagnoses on the spot yes?

Get back to me people on everything to do! I am going to look at it in the morning!

thanks a bunch!

[Vincent Waldon]

TDI's don't need glow plugs to start until near freezing, so unfortunately that's not it.

Yes, you should check Relay 109, but the best bet would be to have it scanned for codes... it's probably trying to tell you what's wrong... and there's lots it could be.  Adding a computer makes it a bit more of a challenge to troubleshoot than our beloved IDIs.

Yes, it has a stop solenoid... in fact, you'll find the pump looks awfully familiar.  ;-)

[8v-of-fury]

pump looks awfully familiar except for the drive by wire

Also that other thread can be deleted or kept around for people looking to solve their non starting TDI. I will keep it in this now with all my questions

So I went down today to look at the car after picking up another mk3 (1996 2.0L 5spd). We pull up in two dubs (81 and 96) and we start to diagnosing the problem, fortunately it was the easiest thing possible! lol Multimeterd some things and found no power anywhere.. got under the dash pushed the 109 around heard some spazztic clicking.. got out a wire and some male spades.. plugged it in. got out of the car went up to the guy..

"You want $500 for it right? Well how about because it isn't even running.. I'll give you $400.."
"Deal, because it isn't running its of no good to anybody"
"How about you go turn the key for me if you don't mind.."
VROOM VROOOOOM
"Holy Shi...."
'Yup "

So needless to say it appears I'm the smartest guy of four to look at it.. as the other three couldn't get it going.. lol

So what are my plans here guys? I gotta get the shell gone in under a month! so anyone who wants stuff, let me know! everything but the engine is up for grabs.

how do these engines like to come out? top or bottom?

[8v-of-fury]

Hello PArty People.

Plans are as follows as of right now.

• Full TDI swap (Keeping the computer and drive by wire)
• O2A Swap w/ cable shift & hydro clutch
• Possible CE2 conversion? (this I will need a ton more info on for sure.. and since I will have the full donor, and my car ripped apart, I might as well consider it right?)

We need to discuss how this engine comes out, I have seen and removed mk2's and mk1's.. never mk3's. A little guidance please?? thank-you !

Do they have a front cross member that gets right out of the way like the mk2?

[Vincent Waldon]

Do they have a front cross member that gets right out of the way like the mk2?

Yup... pull the bumper, the rad, free up the A/C condenser and swing it out of the way, 6 bolts to pull the bumper cross-member,  and then engine/tranny will slide out nicely on a floor jack.

[4wheeler]

So what Turbo came on the TDI you just bought?

[8v-of-fury]

im assuming  the tiny K03 as it spools almost instantly at 14-1500 rpms

[8v-of-fury]

What is the stock boost setting of a 1998 AHU? it seems to pull pretty hard.

[8v-of-fury]

ALSO I have decided to keep the Car as my daily and put the 81 in the garage to tear it down and redo some stuff that will require it to be apart for a while. I'm stoked!

Got the 98 in my name and everything today, got my plates and got a temp sticker and went driving to make sure nothing breaks, it was a good maiden voyage.. It was actually very disappointing, seems I did not clamp one of the inter cooler lines and it was leaking ALL of its boost, and the car was disgustingly slow... DISGUSTING lol, then i realized it was leaking and HOLY MAN! IS IT EVER FAST! OMFG.

[Vincent Waldon]

What is the stock boost setting of a 1998 AHU? it seems to pull pretty hard.

12-15psi, depending on how the ECU feels about it.  ;-)

[8v-of-fury]

whats a good in-fuel cleaner to run Vince? I know the older IDI's like ATF, but I'm sure I've read the TDI's dont much like it..

[8v-of-fury]

So this car is a temp solution so that I can take apart and fix some issues with the 81 which will be back to my DD hopefully soon! I miss it dearly!

What is a cable shifter supposed to feel like? I would assume its suppose to be firmer and more precise than the 81's crappy crappy rod shifter? It's not. The 81 feels like a the comparison of shifting a fine German automobile to that of one made in some third world country.. (kinda feels like a GM product lol)

Also, for the swap.. If say I want to hold off on the O2A swap.. and just do the TDI mated to the old O2O.. will it suffice? the tranny swap might take it off the road for longer than I am willing to deal with.. lol it may be an option down the road for sure! but right now, i think the 020 will be ok for now won't it?

[burn_your_money]

Cable shift usually feels like you are pushing a shovel through slush.

Yes the 020 will suffice but if you launch hard the torque will destroy it. You should look at getting a built one if you are in it for the long haul, or keep a spare box on hand.

I think I said this earlier but there are conversion kits so you can use the rod shift and cable clutch with the 02A. Then you only need a custom tranny mount or two. If you read Shawnb's thread on vortex he covers the mount. I'm sure a search will cover it as well.

[rallydiesel]

I was talking to Broke about 02a's vs. 020's. Ultimately, the 02a have larger diameter shafts and gears and will outperform a built 020. However, I'm sure you will be fine with an 020 for a while on a stock AHU.

[8v-of-fury]

that's what I'm thinking, just for a while. So I don't have to do a TDI ANNNND a Cable shifted/Hydro clutched 02A swap at the same time

However.. this Rod Shifted/Cable Clutched 02A might be a good option... and then finally work up to full cable shift, and hydro clutch. I think I will look in to this more. I mean I have already read a bit about the rod shifted 02A's and people have said bad things.. but what are they comparing too? most certainly not a stock 81 020 box.. lmao

thanks for the replies guys!

ps. Tyler your right, how will I be able to resist the torque!? i'll destroy my FF