2001 passat - misfire problem

[Gash]

Hi all

I have a 2001 passat TDI pd130, when the car is first started it runs like a dream, when the engine starts to get warm , the engine starts to misfire and bounces around all over the place. If i keep drivng until i can see the temp guage drop (indicating the thermostat opening), then switch off the engine and restart, the car runs perfectly . I have had the codes read, intermittant electrical connection to no. 4 cylinder and intermittant misfire of no 4 cylinder. I have checked the basics i.e connections and cables and cannot see anything obvious. My thinking is that i have a sensor fail somewhere in relation to the coincidence of the temp levels. Any help would be greatly appreciated

Gash

[cruiser647]

Not sure, but sounds like it could be a dry joint on a connector of some sort? It warms up, expands and any split/dry joint expands, hence dodgy connection???

Disconnect them all, and spray all the joints/contacts/connectors you can find with WD-40

[Wobby]

Could this be the start of the injector loom wiring failing? Quite easy to replace and not an expensive part. Easier to replace than mess about trying to fix.

[meriafel]

Please let us know how you get on with the misfire problem. With a similar car from 2002 but with no problems at present, need to know the possible solution! Thanks

[CJR]

I have EXACTLY the same problem (to the letter) with my 2001 Passat which I currently run for my daily commute. Did you get to the bottom of what the problem was. I would dearly like to know. Thanks in advance.....