620ti temp gauge, weird behaviour

Jan 19, 2006 9 Replies

Been having the temp gauge doing weird things, Starts off cold as normal, goes up a bout a quarter when urban driving, but only reaches half if I'm sitting in traffic for ages, then as soon as I'm moving again goes down almost to complete cold again. Temp sensor or something more sinister? All levels appear correct under bonnet, engine idling fine, no loss of power. should it fluctuate quite that much? never noticed it till now.



Cheers



Austin



aust snipped-for-privacy@yahoo.com wrote in news:1137694733.510296.253730 @f14g2000cwb.googlegroups.com:

The thermostat has stuck open and is preventing the engine from warming up properly.

Wouldn't that make the needle stay on cold permanantly though?

Austin

aust snipped-for-privacy@yahoo.com wrote in news: snipped-for-privacy@o13g2000cwo.googlegroups.com:

No. If you're stationary, the engine can warm up despite the stuck thermostat, because no air is getting blown into the radiator. It cools down again when you set off because the thermostat cannot reduce the amount of water going through the radiator, so you get too much cooling.

Ah makes sense, Just so happens I'm due a service so will mention it when I book it in, likely to cost much?

Austin

aust snipped-for-privacy@yahoo.com wrote in news: snipped-for-privacy@g47g2000cwa.googlegroups.com:

Nah, less than £10 for the part and about 15 minutes job to fit one on most cars.

Who are you replying to ?

The message from "Tony Bond \(UncleFista\)" contains these words:

And why?

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