We just had our indy replace the cam cover gaskets. These were in horrible shape. Brittle and oil leaking into the manifold. Really nice.

Now after the engine is good and warmed up, I get a whining sound (okay, maybe a whistle) when we slow down and stop.

The sound continues as we sit and idle.

When I press on the accelerator and start moving, the sound stops.

It doesn't happen all the time, just when fully warmed up.

I guess I should check the pcv valve.

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Dan P, 2007 BMW X5 3.0, 1978 Porsche 928 5 speed