over heating?

[Conker]

You should check a thremostat in boiling water before fitting to make sure it opens - it could be a duff.

Before you take it out again, are you sure you've properly checked for air pockets in the system?  Run the car up to temp with the expansion cap off, squeezing hoses etc. etc.

Repeat this process several times, allowing the car to cool with the cap off. Also, some people have had to hold the tank up in the air to allow gravity to force the air bubble round.

[rubjonny]

new stats can be bad aye, next time check it in a pot o boilin water to make sure it opens.  if you get a good strong spray o water from the thin hose to the top of the header tank when you rev it the waterpump is ok, need to check this from cold with the cap off.

[Thom89]

I had the exact same symptoms on my Audi A4 last week, turned out the water pump impeller was spinning on the shaft!  it was still pumping water, only not enough as the engine speed increased, new pump cured it...
Tom

[vwjack]

ill check the water pumps tomorrow and if thats ok ill take the thermo out and cook it ! and if thats fine ill do what? new temp sender, rad and then car!

thanks for the help lads
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