High pitch squealing

Asked by Definitepoizun Mar 17, 2018 at 11:18 AM about the 1999 Ford Crown Victoria 4 Dr LX Sedan

Question type: Maintenance & Repair

When I crank I hear a high pitch squealing
then when I take off it's quiet. But when  
sitting at light it squealing.

2 Answers
25,265

Mark answered 6 years ago

If you haven't yet, Inspect the serpentine belt. If it's cracked and dried up, a new belt could resolve the problem.

1 people found this helpful.
Mark helpful
159,085

Bob answered 6 years ago

It could be several things. The alternator and the belt tensioner and idler would be the first things I would look at. You could remove the serpentine belt and briefly start the car to see if the noise is gone. If it is quiet with the belt off then something that the belt turns or drives is the issue. It is perfectly safe to run the engine without the belt for a very short time like 1 minute or less.

1 people found this helpful.
Mark helpful

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