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post #4 of (permalink) Old 21st November 2007
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I'd be inclined to think if everything seems fine with the car's driveability, that the sounds are just contraction of cooling parts.

Newer cars have less coolant than before and rely heavily on the fan (this allows faster warm-up, and lower emissions), therefore when the engine is switched off, there is a lot of pent-up heat present. On some cars, the fan stays on after the engine is off to help reduce temps.

Also, different materials dissipate heat at different rates, hence why you get sounds created from movement.


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