2001 Jetta Tdi runs rough
Your priblem sounds more like the glow plug timer relay than the
exhaust. White smoke after start up is a sign of diesel entering the
exhaust before it has burned completly. This is as a result of the glow
plugs switching off too early, which is usually caused by one or more
faulty glow plugs or a faulty timer.With engine COLD, IGNITION ON...
Check voltage with all 4 plugs connected. You should have a reading of
If there is no power, check in-line fuse on loom coming to plugs.
If power is present, check for How Long. If only for a few seconds, the
problem is with the timer. This unit (the larger of the relays and
usually black in colour) is fitted on the fuse board, and there
are a few different types. They come in 7 pin..8 pin..and even 9 pin
The glow plug light is often NOT accurate (even with a new timer unit
fitted) as to the time of heating, and you will almost certainly find
that power will flow to the plugs for quiet some time after the light
goes out. This is not unusuall with The Jetta Tdi.
I hope this helps you sort out this problem
Aug 18, 2009 |
2001 Volkswagen Jetta TDI