I've been trying to trace down the source of this humming and I'm stumped so far.
The humming is only present at idle and low RPM it goes away when the car is revved up. It sounds like its coming from under the intake manifold. It also is present after shut down but gets quieter with the engine dying down. It sounds like a vacuum issue but I haven't been able to track down the source. Any ideas on where to look would be much appreciated.
Thank you for the help,
The humming is only present at idle and low RPM it goes away when the car is revved up. It sounds like its coming from under the intake manifold. It also is present after shut down but gets quieter with the engine dying down. It sounds like a vacuum issue but I haven't been able to track down the source. Any ideas on where to look would be much appreciated.
Thank you for the help,
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