Question about 2000 Oldsmobile Alero

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If car is not warmed up, a loud squealing noise is heard for about 20 seconds

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Does it sound like a fan belt ?
Belt(s) could be loose and or warn..
Check you belts..

Hope this helps !!
rate me good ;o)

Posted on Jul 14, 2009

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Remove the serpitine drive belt and spin all pulleys by hand and check for noise. Also check belt tensioner for being free moving.Check belt for wear.

Posted on Jul 14, 2009

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1 Answer

I have a loud squealing noise upon starting the car. the squealing normally lasts about 30-45 seconds. sometimes the noise will appear aftrer pulling off from a stopped position, as well. all belts


Try to tighten the belts a little firm.Sounds like when engine idling no squelling only when about to take off .Some times belts may seem ok on the outside but if you look on inner side you tend to see cracks in the belts .

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check harmonic balancer, the upper half may be slipping on the lower half.. TSB on issue #08-06-01-006C

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Mine did that off and on for a month with no other problems then it started making a loud suction noise and the check engine light came on. I took it to the dealer and they said the "oil separator" needed to be replaced.
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3 Answers

Had belt squeal, treated w/belt dressing now loud clicking


Stop!
One of your pulleys is seizing. Most likely the a/c compressor or the tensioner (idler pulley).

Use a helper.... turn OFF a/c and have someone start the car. Observe the pulleys and see if the center one quits turning or is the source of the noise.
If can't determine and no noise, turn ON A/C and observe.
You will find it, but stay out of the line-of-fire if the belt breaks... it will be slingshot out of the engine compartment!!

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Check the idler pulley. Does the noise happen when the A/C is on?

Jul 05, 2009 | 1998 Dodge Neon

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1998 GS 400 - Loud high pitch noise on the inside cabin


never had that problem with my GS400 but on my 95 maxima, i used to have that same high pitch squealing noise... i used some belt dressing that i got from R & S Strauss for a few dollars and sprayed it on my belts and pulleys that ran around the alternator, compressor, etc. and never heard the noise again. hope your problem is as simple and cheap to fix as mine was

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2 Answers

Loud squealing noise


The noise is most likely the serpentine belt. Check it's condition and that of the belt tensioner. It sounds like the belt is slipping, causing the squealing noise u describe. As the belt warms up, it's getting a better 'grip' and the noise stops. Turning on the heat also turns on the a/c in newer cars, this added drag on the belt (one more component to turn, the a/c compressor) would explain why it happens when u turn on the heat. Is the belt original? If yes, it's time to change it, and check the belt tensioner to make sure it's doing it's job of keeping the belt snug on all the pulleys. Let me know how u make out.

Dec 13, 2008 | 2003 Nissan Pathfinder

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