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Old 06-10-2010, 01:12 PM
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Infamous engine squeal at idle

I have the squeal...

After reading up, I thought it was the DISA valve. Took it out (was relatively clean and not stuck) cleaned it and reinstalled but squeal at idle was still there.
Ive realized it:
a) is constant when the ac is on at idle
b) very faintly present or not at all w/ ac off at idle
c) if ac is off and the squeal is not present, a quick pop of the throttle will make it happen for a split second then dissapear.

Its hard for me to diagnose the area its coming from but Im pretty sure its not the DISA valve area, more towards the front.

Im just hoping its not the ac compressor or alternator.
May be a tensioner? Or old belts?
I inherited this 02 so I dont know when the belts were last changed.

thanks
Matt
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  #2  
Old 06-10-2010, 01:36 PM
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THK THK is offline
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Sounds like the tensioner is getting a little weak. Not knowing age and mileage, I would consider replacing the belt and tensioner.

I had the same thing happen to me on another vehicle and the above was the cure.

Good luck!
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  #3  
Old 06-10-2010, 01:37 PM
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Im starting to agree w/ u
its an 02 3.0 w/ 115k

thanks
Matt
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Old 06-10-2010, 02:59 PM
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Belts
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Old 06-11-2010, 12:01 AM
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I had same problem... Replaced both tensioners solved my problem.
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