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Anybody know their stuff with VW Diesels??
Posted 12 March 2012 - 04:15 PM
Its having a weird electrical bug...
What is normally suposesd to happen:
Turn on key to start the glowplugs
Dummy light/s and dummy light for glowplugs come on
Dummy light for glowplugs shut off when ready
Off you go.
What is happening now:
Dummy lights come on for a split second
Followed immediately by the Ebrake dummy light coming on
The truck wont start
Once key is removed the Ebrake light stays on, even when the Ebrake is released.
Have to take the positive terminal off the battery to shut the light off.
Anybody know whats happening?
Posted 12 March 2012 - 04:51 PM
what model is it? i understand its a vw diesel truck but i need the model to really help.
Posted 12 March 2012 - 05:00 PM
tdiclub.com is the best site I've found but most of it is the later stuff.
But I'd certainly go there and look.
Posted 12 March 2012 - 05:08 PM
Posted 12 March 2012 - 05:19 PM
Dave: I'll have to look and see if theres a fuse or something there.
Nipper: The battery and alternator are both good.
Tested a bunch of things:
Starter from this truck worked when put in another car.
Grounds are all in place and in good contact.
Battery terminals have good contact.
Tested power from battery to glowplug leads when key is on: power going to plugs.
All the fuses under the dash are in order.
My dad talked with someone on the phone and they mentioned that it could be the "interlocking relay alarm safety" which has something to do with the seatbelts?
Thanks everyone for the insight so far.
Posted 12 March 2012 - 05:35 PM
edit: does it crank but doesnt start or does it not crank at all? also have you tried putting a screwdriver to the starter to see if it will start? (if it doesnt crank) maybe ignition switch is bad.... cant seem to find anything on that interlock thing you were talkn bout....quite a hard search but i did read that those are prone to all kinds of electrical demons lol
Edited by 95legwagon, 12 March 2012 - 05:40 PM.
Posted 12 March 2012 - 05:52 PM
The seatbelts don't have to be on to start the car...
Also we replaced the ignition switch too, since that seemed like what was going on. (We've been fighting this gremlin for about a week now)
The engine wont crank at all.
Posted 13 March 2012 - 01:48 AM
I had one for a gas mk1. it was great for tracking down problems.
Posted 15 March 2012 - 01:13 AM
Thanks for that link Nipper, I have that saved now.
Only problem is it doesn't have a table of contents or index. :\
I've been at work the past few days and my father continued to diagnose the problems. He got it to randomly start after moving some wires around, but the glowplug light on the dash stayed on while running.
Then he shut it off, tried to start it again, and it was back to just throwing up the Ebrake light.
Posted 23 March 2012 - 02:40 PM
We ran a ground from the battery to the alternator, and it would start every time. However the wire eventually burned up.
So we instead ran a ground from the existing connection of the battery to frame ground; to the transmission. Working good.
This is preventing the drain on the battery that was happening.
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