screeching sound from engine


Asked by Jan 15, 2015 at 01:01 PM about the 2003 Ford Mustang Base Convertible

Question type: Maintenance & Repair

it is a belt 'sound' but all belts seem to be fine...sound is coming from the engine

1 Answer


There's always the srping on the tensioner pulley. If it starts to wear it won't keep the right amount of tension on the belts, so when the engine is cold, or you rev it, the belts slip and squeal. I don't think there is any real way to test if the tensioner is doing it's job 100%, you just have to go through the process of elimination

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