Temperature Gauge Malfunction
Moderators: water01, vwnutant, desertstorm
Temperature Gauge Malfunction
On my 05 B6 1.9TDI (BKC eng) Passat, the temperature gauge is playing up. It rises to 70-75deg and not much further. It will wander around between 70 and 80deg but never reaches 90 as it should, even on a very long drive. I have replaced the coolant temp sender on the engine, but it hasnt made any difference. I checked the engine temp via the Live Data function on a diagnostic reader and it read 67deg when the gauge showed 77deg, and this was after a long hard run in 4th gear so the engine would have been well hot. As I say it doesnt reach 90deg even after a long drive so even if the thermostat was stuck open, it would have plenty time to reach full temp. Just wondering if there are any common faults with wiring etc on this model? Can anyone advise?