Author Topic: Help me identify this...  (Read 6530 times)

August 23, 2010, 04:00:18 pm

ventureforth

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Help me identify this...
« on: August 23, 2010, 04:00:18 pm »
Here is a pic of something I can't find in the Bentley manual.  It appears to be broken, and I'm wondering what function it provides so as to replace or fix it.  Currently, there does not seem to be anything "wrong" with my Rabbit.  My motor is 1.6NA in an '82 Rabbit with a FN 5 speed that may be factory or may have been swapped in later.  If the throttle lever went back that far, it would hit it at idle.  There are two wires coming out of the side of it, which you can almost see.  Sorry for the less than ideal pic, it was all I could get off before my phone died.

Thanks.


Reply #1August 23, 2010, 04:56:05 pm

Turftech

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Re: Help me identify this...
« Reply #1 on: August 23, 2010, 04:56:05 pm »
It looks like a throttle idle return damper.  Must have had an automatic transmission before?  It keeps the throttle from slamming totally shut for a moment when you let off the pedal.  
'90 Jetta GL TD  570'000 Kms and counting (Gave her to a friend)
'92 Passat G60 Syncro Wagon 180'000kms. TDI conversion project
'87 Jetta Coupe 325'000kms. MF IDI conversion project

Reply #2August 23, 2010, 04:57:23 pm

ventureforth

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Re: Help me identify this...
« Reply #2 on: August 23, 2010, 04:57:23 pm »
It's a manual tranny.  FN 5-Speed.

Reply #3August 23, 2010, 04:58:46 pm

Turftech

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Re: Help me identify this...
« Reply #3 on: August 23, 2010, 04:58:46 pm »
Man you are quick!  I corrected that in my post.  I'm sure it's a damper. 
'90 Jetta GL TD  570'000 Kms and counting (Gave her to a friend)
'92 Passat G60 Syncro Wagon 180'000kms. TDI conversion project
'87 Jetta Coupe 325'000kms. MF IDI conversion project

Reply #4August 23, 2010, 05:00:31 pm

ventureforth

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Re: Help me identify this...
« Reply #4 on: August 23, 2010, 05:00:31 pm »
So the wires have no effect now that it's a manual?  Should I just disconnect it and toss?

Reply #5August 23, 2010, 05:00:57 pm

Vincent Waldon

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Re: Help me identify this...
« Reply #5 on: August 23, 2010, 05:00:57 pm »
Does your Rabbit have an upshift arrow on the dash??  I thought that was an MK2 feature only, but that sure looks like the throttle position switch from the upshift light system on early MK2s.   ;)
Vince

Edmonton, Alberta, Canada
2001 silver TDI Jetta Malone Stage 1.5 , 2001 blue TDI Jetta SBIII 216s Malone Stage 3, 1970 Bay Window bus

Gone but not forgotten: 1969/1971 Beetles, 1969/1974 Westies, 1979 Rabbit, 1986 TD Jetta, 1992 gas Jetta, 1994 TD Jetta

Reply #6August 23, 2010, 05:21:21 pm

ventureforth

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Re: Help me identify this...
« Reply #6 on: August 23, 2010, 05:21:21 pm »
Nope.  No upshift light.  It's possible whoever did the tranny swap before I got it took the tranny from an MK2 and just thought the needed that bit...but didn't actually wire up any indicators in the dash.  At any rate, it seems to be useless to me...but not doing any harm.  I'm just satisfied it's not something important.  Thanks for all the quick replies!

Reply #7August 23, 2010, 05:46:08 pm

Vincent Waldon

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Re: Help me identify this...
« Reply #7 on: August 23, 2010, 05:46:08 pm »
I'm just satisfied it's not something important. 

Absolutely... delete away !!
Vince

Edmonton, Alberta, Canada
2001 silver TDI Jetta Malone Stage 1.5 , 2001 blue TDI Jetta SBIII 216s Malone Stage 3, 1970 Bay Window bus

Gone but not forgotten: 1969/1971 Beetles, 1969/1974 Westies, 1979 Rabbit, 1986 TD Jetta, 1992 gas Jetta, 1994 TD Jetta

Reply #8August 23, 2010, 06:06:48 pm

Turftech

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Re: Help me identify this...
« Reply #8 on: August 23, 2010, 06:06:48 pm »
Ah, the dreaded shift arrow...  Sorry for the error.  Serves me right for guessing!
'90 Jetta GL TD  570'000 Kms and counting (Gave her to a friend)
'92 Passat G60 Syncro Wagon 180'000kms. TDI conversion project
'87 Jetta Coupe 325'000kms. MF IDI conversion project

Reply #9August 23, 2010, 06:37:00 pm

Vincent Waldon

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Re: Help me identify this...
« Reply #9 on: August 23, 2010, 06:37:00 pm »
No worries.. from that angle, with the accordion rubber boot... could easily be a damper.
Vince

Edmonton, Alberta, Canada
2001 silver TDI Jetta Malone Stage 1.5 , 2001 blue TDI Jetta SBIII 216s Malone Stage 3, 1970 Bay Window bus

Gone but not forgotten: 1969/1971 Beetles, 1969/1974 Westies, 1979 Rabbit, 1986 TD Jetta, 1992 gas Jetta, 1994 TD Jetta

Reply #10August 23, 2010, 07:51:53 pm

Baron VonZeppelin

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Re: Help me identify this...
« Reply #10 on: August 23, 2010, 07:51:53 pm »
As Factory - ALL 82's through 87 or 88 (at least in Diesel family) - came with upshift arrow in center of dash.

But things do have ways of getting swapped/changed/deleted as time goes on. And i wouldn't want a working upshift arrow anyway.

Reply #11August 23, 2010, 08:05:49 pm

ORCoaster

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Re: Help me identify this...
« Reply #11 on: August 23, 2010, 08:05:49 pm »
Would my 1981 Rabbit be considered a 1982 if it were manufactured in August of 1981?  It has the upshift arrow in the dash, has a light behind it but does not work.  I have none of those rubber booted, wired switches on my Injection Pump.

Checked the Alternator for the secret W terminal and found none.  Isn't that part of the upshift technology of the time?

Just wondering, perhaps the PO had the dash and instrument panel replaced.  It is in great shape with the exception of the vents on the side.  They are all brittle and do not open or close well.

Dale

Reply #12August 23, 2010, 08:19:03 pm

Vincent Waldon

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Re: Help me identify this...
« Reply #12 on: August 23, 2010, 08:19:03 pm »
Yeah, you could look for an uber-complicated reverse switch as well with (EDIT: 4 or 5) pins on the top of the tranny.

As I understand it, the algorithm was extremely simple:  signal an upshift IF over 2000ish RPM and NOT full throttle, coasting, or already in 5th.

So.... you need a "coasting" and "full-throttle" switch on the IP, the W-terminal for speed, and a switch on the tranny that signifies 5th gear.  Very high tech.   ;)
« Last Edit: August 24, 2010, 09:03:16 pm by Vincent Waldon »
Vince

Edmonton, Alberta, Canada
2001 silver TDI Jetta Malone Stage 1.5 , 2001 blue TDI Jetta SBIII 216s Malone Stage 3, 1970 Bay Window bus

Gone but not forgotten: 1969/1971 Beetles, 1969/1974 Westies, 1979 Rabbit, 1986 TD Jetta, 1992 gas Jetta, 1994 TD Jetta

Reply #13August 23, 2010, 08:49:19 pm

Baron VonZeppelin

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Re: Help me identify this...
« Reply #13 on: August 23, 2010, 08:49:19 pm »
Would my 1981 Rabbit be considered a 1982 if it were manufactured in August of 1981?

Short answer - Yes.
August was general start of next production year model.
But that's not to say i was standing by the big doors in August 1981 watching them roll out 82 Rabbits. I was still in High School just starting the 12th grade.

Long answer -
Complications and things of all sorts can delay new model productions "sometimes". If they didn't have all the proposed equipment in hand from vendors, they would extend the previous model year production if needed, but with mix match pieces as necessary.

Does the VIN match the Title, and is it Titled as 1982 ?

81 used a 2 pin reverse switch and was w/o upshift.
82 used a 4 pin with upshift.
Don't know for certain when 5 pin came along - but at least by 1985 it was 5pin. Probably sooner since the 4 pin is now unobtainablestic.
Then 88 or 89 the upshift was dropped when CE2 wiring came in, and they went back to 2pin.
« Last Edit: August 23, 2010, 08:51:03 pm by Baron VonZeppelin »

Reply #14August 23, 2010, 09:25:11 pm

maxfax

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Re: Help me identify this...
« Reply #14 on: August 23, 2010, 09:25:11 pm »
As Factory - ALL 82's through 87 or 88 (at least in Diesel family) - came with upshift arrow in center of dash.

But things do have ways of getting swapped/changed/deleted as time goes on. And i wouldn't want a working upshift arrow anyway.

I've read that same bit Baron..  But I have seen upshift lights clear back to '80..  ???  Didn't A/C cars also have throttle switches??   I guess maybe they just had a full throttle switch to kill the A/C..