SQUEALING ENGINE

1990 Ford F-150

Tiny

robbie4413

August, 4, 2014 AT 11:10 AM

Hi I have a 1990 f150 xlt lariat 4.9 L. My engine squeals upon startup and gets worse if I turn on the ac when the engine is warming up. After that its fine. The power steering pump pulley has some give to it though. About 1/16". When the engine is running it doesnt seem to wobble at all. Have replaced the belt and the tensioner w pulley. Cleaned all the pulleys as well. Trying to fix this terrible sound and need help! It would be much appreciated my friend.

FOUND 45 RELATED QUESTIONS

1 Answer

Tiny

hmac300

August, 4, 2014 AT 12:35 PM

Use a straight edge and check alignment of belt if the pump wobbles with the belt off see why a bent pulley can make the belt go bad and then check for oil on pulleys if any clean it all off and stop where it is coming from.

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