Ummmm A/C Bearing or what is making this noise
#1
Thread Starter
Seasoned Member
Joined: Mar 2010
Posts: 497
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From: Santa Clarita,CA
Year: 2000 Sport
Model: Cherokee
Engine: I6 4.0
Ummmm A/C Bearing or what is making this noise
#5
Thread Starter
Seasoned Member
Joined: Mar 2010
Posts: 497
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From: Santa Clarita,CA
Year: 2000 Sport
Model: Cherokee
Engine: I6 4.0
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#8
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Joined: Jul 2009
Posts: 41
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From: South Of San Antonio Tx.
Year: 1994
Model: Cherokee
Engine: 4.0
Most likely it's the A/C bearing, but you might also want to check your water pump. I had the same noise and i had the refrigerant recovered and the system disconnected and the noise was still there. I looked at my water pump pulley and it was warped and grinding on the housing and caused the bearing to start knocking
#9
Thread Starter
Seasoned Member
Joined: Mar 2010
Posts: 497
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From: Santa Clarita,CA
Year: 2000 Sport
Model: Cherokee
Engine: I6 4.0
Most likely it's the A/C bearing, but you might also want to check your water pump. I had the same noise and i had the refrigerant recovered and the system disconnected and the noise was still there. I looked at my water pump pulley and it was warped and grinding on the housing and caused the bearing to start knocking
#11
Member
Joined: Dec 2010
Posts: 141
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From: Fort Worth Texas
Year: 1985
Model: Cherokee
Engine: Chevy 350
Could be an idler pulley. I've had that happen twice on my car. First time it was the S/C idler pulley and when it failed it sent the serp belt into the accessorie belt destroying everything.
The second time I caught it early enough on the acc. belt and swapped it before it caused any issues.
The second time I caught it early enough on the acc. belt and swapped it before it caused any issues.
#12
CF Veteran
Joined: Mar 2010
Posts: 47,923
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From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
old school way of checking noises take a 3 foot pc of garden hose or rubber hose put onr end to your ear then carefully move it around the suspect area untill the noise gets the loudest it works you look stupid but it works
#13
Member
Joined: Dec 2010
Posts: 141
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From: Fort Worth Texas
Year: 1985
Model: Cherokee
Engine: Chevy 350
Long screw driver or long extension works good as well. Plus it doesn't flex when your working around the belts. So it won't get snagged or anything.