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I have a 2005 Mercury Sable. When the A/C is on and you're outside the car you can hear a rattling/grinding type sound under the hood. It's not loud and probably wouldn't be that noticable to anybody who wasn't familiar with the way the car sounds. A/C seems to be working fine. Any ideas?

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  • Cars & Trucks Master
  • 21,873 Answers

In most cases the noise is the bearing for the ac compressor clutch. Once the clutch bearing fails, the serpentine belt will be lost.

Posted on Apr 30, 2013

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6ya6ya
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Posted on Jan 02, 2017

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66 chrgr
  • 1011 Answers

SOURCE: very loud "rubbing " sound when driving only

you did damage to the wheel bearing i bet it sounds like a airplane sound. also if you steering wheel is off 7"then have front end aligned because this will destroy the tires and they will make noise.

Posted on Mar 29, 2009

neuropagan
  • 46 Answers

SOURCE: 2005 nissan maxima does not blow out cool air and

sounds like you have a bad a/c compressor if it is locks up on you you can end up loosing the belt better get it checked out before it leaves you stranded.

Posted on Apr 23, 2009

  • 1 Answer

SOURCE: 2005 nissan murano sl, with rattling sound when accelerating

I recently experienced the same symptom with my '05 Murano and it was not a fuel problem. The dealer listed the cause as dry axle splines and replaced both front drive shaft assy's. Note that this was done as warranty with no cost incurred by me.

Posted on Jun 18, 2009

wireguy212
  • 1627 Answers

SOURCE: Engine rattling

It sounds to me like you have a broken serpentine belt and the noise is coming from it rubbing on the crank.Shut the car off and look again and if i'm right you need to pull it out and then get the new belt install asap.If you do have to drive the car just remember that without a belt the car will not recharge the battery and it will over heat quickly so just take it far enough to park it in a safe place.

Posted on Dec 29, 2009

  • 462 Answers

SOURCE: 2002 Nissan Maxima "Clicking-Rattle" noise from under hood

Exhaust leak?

Posted on May 26, 2010

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