View single post by Tom Bradley
 Posted: 11-02-2014 02:18 am
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Tom Bradley

 

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Sounds most like a water pump bearing to me. These can make all kinds of strange noises. It can also change depending on whether the thermostat is open, letting water through or not, which would explain it going away sometimes when the car is warm.

I suppose it could also be the thermostat itself.  If something has come loose, it could be making strange sounds when the coolant is flowing.

It does not sound like the cam belt to me, but you can rule this out by tightening it a bit and see if the sound is then present all the time.

You should be able to narrow down the location by driving the car until the noise starts and then parking it and using a tube to listen to various suspect spots around the engine.

Last edited on 11-02-2014 02:29 am by Tom Bradley