As there seems to be a lot of people having failures on the temperature sender, is there anyone who has swapped one of these themselves? I assume it should be possible to pick up one of these from partco or similar for a lot less than from a skoda/vw dealer and if its just a simple case of drain coolant, unscrew old one and screw in new one I dont see the point of paying them to do a simple job?

andy

What effect does this have? I'm beginning to wonder if I have some such problem - for some reason my fuel economy picks up as soon as the warm weather arrives - seems contradictory to the "cold air is best" theory ...

In my case it's simple to spot the effect... the temperature gauge reads nothing I don't know if the ECU uses the info for anything related to fueling and mixture control, maybe someone out there who is more awake than I can answer that one?

Ah - OK.

I remember lots of talk about various sensors - thought this may be related. Sorry to borrow your thread unnecessarily.

You probably don't even need to drain the coolant - just have a rag handy and be quick.