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2000 Saturn SL2 CAR MAKING A GRINDING / HOWLING NOISE

Tiny
GMARISA30
  • MEMBER
  • 2000 SATURN SL2
  • 4 CYL
  • 4WD
  • MANUAL
  • 80,000 MILES
My car is makiing a sporatic grinding / howling noise that last for about 3 seconds and helps if I turn the car off and then back on. With in the last 2 years, I have had put in a rebuilt engine, new serpitine belt, water, pump, radiator, and intake manifold. Noise is coming from the passenger upper right side? Please advise.
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Friday, June 18th, 2010 AT 4:35 PM

3 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
If you mean facing the belt upper right side you mean the a/c compressor area?If so I would make sure the center of the a/c clutch turns freely then remove the belt and spin the a/c clutch see if you can feel or hear that noise. Also spin all the other pulley's then start the car without the belt see if the noise is still there don't let it run very long without the belt. Let me know what you find.
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Friday, June 18th, 2010 AT 5:49 PM
Tiny
GMARISA30
  • MEMBER
  • 2 POSTS
It's coming from under hood - I guess if you're standing in front of the car - it would upper left area. Would an air pump make that noise?
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Friday, June 18th, 2010 AT 7:21 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
So it mostly does it when the engine is cold?Could be the pump if it only does it when first started?Let me know.
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Friday, June 18th, 2010 AT 7:45 PM

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