[Vwdiesel] Arrggggh

[KI4TLF]

I didn't have the diagram for it, but I'm looking around.

It sounds like it's a grounding issue or at least a marginal connection somewhere.  Temperature changes cause the connection to vary and the light responds.

GregM

-----Original Message-----
From: Vwdiesel [mailto:vwdiesel-bounces at vwfans.com] On Behalf Of lbaird119 at aol.com
Sent: Wednesday, January 13, 2016 10:38 PM
To: vwdiesel at vwfans.com
Subject: Re: [Vwdiesel] Arrggggh

'96, 1Z, TDI Wagon.
  So far my guess is feedback through something else on the ground circuit.  Picked up a copy of the relevant circuit tracks today.  Hope to have time to look them over and figure out what I need to track down and test.  Seems to be getting + on that ground track, best I can guess so far.


Tractor blade had no float today (we have a ball valve to shut off the down pressure).  Something was wrong, making a check valve somehow.  One of the seals had a piece missing.  Picked up a 3/4 valve, as Dad mentioned and it looked like one.  Got back and nope, 1/2" so go back to town after one. Supplier was out so to Lowe's I go.  Figured out why it looked like a 3/4 valve;  HD 1/2" so much bigger body, just didn't pay attention to the pipe size.
  Nothing's going quickly.  454 has had an oil leak so rather than just replace the seal we're pulling it and doing the crank.  When I first installed it, I didn't get the torque converter all the way in and had all that pressure on the crank and ground down the thrust.  Figured if we're that close, we'd better fix it right this time.  Ugh.  Thank goodness Jose is helping out and doing most of it.
     Loren




-----Original Message-----
From: KI4TLF <ki4tlf at gmail.com>
To: lbaird119 <lbaird119 at aol.com>
Sent: Wed, Jan 13, 2016 6:30 pm
Subject: RE: [Vwdiesel] Arrggggh

What year Loren?

GregM

-----Original Message-----
From: Vwdiesel [mailto:vwdiesel-bounces at vwfans.com] On Behalf Of lbaird119 at aol.com
Sent: Tuesday, January 12, 2016 7:58 PM
To: vwdiesel at vwfans.com
Subject: [Vwdiesel] Arrggggh


Geez!  Took me a week to do the starter on the crawler, what with holiday, parts, no-show on parts...
  Now I'm trying to get the Passat going again.  It had been starting hard (figured it was low battery from short-tripping) then it wouldn't start so ok, bad 103/GP relay.  Sure enough it wasn't working.  Also the day before, it was going along, sputtered badly, CEL came on, slowly started clearing up and in a minute or two was running fine again.  Hmmm.
  After diagnosis, the relay was fine but not getting a ground.  OK, unplug the temp sensor and all is well.  Order a new temp sensor, put it in and it does the same thing!  Only fault was open or shorted to + for the temp sensor, same as it shows with it unplugged.  So now I'm not sure where to look.  I thought the supply of ground was bad but if it's broken then it'd be the same as unplugging, which gives me full glow time, as it should.  I suppose if somehow it's shorted to positive...

  I'm not sure which wire or where to start looking.  :-P  Apparently the one from the sensor to the ECU is ok so that much is good and the ECU should be since it at least goes full glow or no glow and recognizes a problem.
   
  Any ideas or at least wiring diagrams of where to look?
  TIA.
    Loren
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