I have just bought a 1995 a4 1.8 se.

When starting the car the rev counter shows idling at 3-4th revs although engine speed is fine. After approx 1 min of starting the car the water temp warning light starts to flashing and remains on, even though water level is ok. On start up the temperate guage goes full up to above maximum(engine cold) then gradually goes down while driving untill it's as though the gauge is not working, but engine temp/water temp is fine. The speedo is also faulty as it reads extermley high approx double the correct speed, the milage indicator also doesn't work, just vaguely shows def? was unsure if this was a code. Fuel, oil temp and battery voltage guages all seems to work ok. The car seems to drive fine,could all these problems be related?

Any help would be much appreciated,

chris.

 

A defective sensor can't cause all those issues, maybe the cluster needs replacing.