temp gauge problem

[carl]

My temp gauge has gone nuts several times. The needle goes dead, then comes back on like a louse wire. the dealer has replaced the sending unit then 700mi later it did it again. They now have replaced the thermostat. I think it may be the gauge I'm waiting to see how long it lasts before it trips a code again. Has anybody had a simular problem. thanks carl

[Scouser]

I did have a very similar problem a few years back but I fixed it.

Now don't get too excited cos I don't exactly know what I did......

Basically if jack your car up and look under the engine towards the

back, about dead centre just behind the cats you will see some sort of

sensor plugged into the engine casing. This could very well be the

temp sensor, I don't know. At the time I assumed it was. Anyway, I pulled the wires, cleaned them and put them back. Since then I have never had the problem come back.