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914World.com _ 914World Garage _ Deceleration squeaking sound. Video attached.

Posted by: Michael N May 3 2021, 02:27 PM

I recently noticed a squeaking sound when decelerating on the car when in gear or letting off the throttle. It is a high pitched sound and happens when letting off power or when using gears to decent down a hill instead of braking. It can be heard in the attached video after letting off the revs and goes away back at regular idle. Any thoughts?

https://www.youtube.com/watch?v=Z56NIM39uFQ

Posted by: bretth May 3 2021, 04:54 PM

Wild guess would be belt or something alternator related.

Posted by: Mark Henry May 3 2021, 05:20 PM

the belt would be my first check.

Posted by: Dave_Darling May 3 2021, 10:29 PM

Almost sounds like air going through something. If the belt isn't causing it, look at your decel valve to make sure it's hooked up correctly.

You can stick a vacuum hose up to your ear and put the other end in various spots in the engine bay to see if you can isolate the noise.

--DD