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Old 07-20-2010, 09:34 PM
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A/C compressor problems

So, I was changing the oil on my 3.7 the other day and had to remove the serpentine belt to get to the oil filter because it was so tight. I put the belt bcak on now and whenever I run the a/c, the pully on the compressor squels like I have a bed belt or something. The Jeep only has 50,000 miles on it and the belt seems to be in fine condition. Could it be the compressor? I can figure it out and its driving me nuts. I don't want to lose the belt on the road and I'm worried I might screw something up. Any ideas? Do they have issues with the compressor pully's on these engines?
Thanks for any help
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Old 07-20-2010, 09:38 PM
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Re: A/C compressor problems

Did you make sure that the Serpentine belt threads were aligned with the Pulley threads? Check for Cracks on your belt. Maybe it's time to Change it. Is your A/C working properly? If so leave it alone.
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Old 07-21-2010, 12:47 AM
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Re: A/C compressor problems

You don't have to remove the belt to replace the oil filter, go to an auto parts store or Wal-Mart and get an oil filter cap that has a wrench stub on it,then you can use either a socket or wrench to screw off the filter.
I would also go ahead and replace the belt while your at it.
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Old 07-21-2010, 10:13 AM
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Re: A/C compressor problems

Sounds to me like you have gotten some oil on the belt making it spin or squeel freely.
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Old 07-21-2010, 07:25 PM
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Re: A/C compressor problems

So I checked and no cracks or oil on or in the belt and I reinstalled it properly. I had to remove the belt to get the filter off because whoever put it on the last time cranked it down with air or something. It wasn't moving. The grooves are lined up and everything seems to be fine. There isn't some sort of belt dressing or anything like that, right? What would a seezing compressor act like? Is my best option to go buy a new belt?
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Old 07-21-2010, 08:05 PM
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Re: A/C compressor problems

1. remove belt and spin air compressor pulley,. it should spin true and free. test the rest of them by hand.
2. get a real good look at the belt any cracking get a new one. also look for that oil.
3. the manual says this after install of the belt:

With the drive belt installed, inspect the belt wear indicator . The gap between the tang and the housing stop ( measurement A ) must not exceed 24 mm (.94 inches).

its in the 3.7 belt install area.

4. what about the tensioner itself. that dont last forever either.
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Old 07-21-2010, 09:53 PM
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Re: A/C compressor problems

Quote:
Originally Posted by robpp View Post
1. remove belt and spin air compressor pulley,. it should spin true and free. test the rest of them by hand.
2. get a real good look at the belt any cracking get a new one. also look for that oil.
3. the manual says this after install of the belt:

With the drive belt installed, inspect the belt wear indicator . The gap between the tang and the housing stop ( measurement A ) must not exceed 24 mm (.94 inches).

its in the 3.7 belt install area.

4. what about the tensioner itself. that dont last forever either.
So, upon further inspection, it seems like the compressor pully is seezing up. Tension is great, belt is good but the pulley doesn't want to turn freely almost like its sticking. So I think its the pulley or the bearing inside. I don't think its the clutch because otherwise it would lock on and always be turning the compressor or open and not engaging at all. I'm bummed now because all I can see are dollar signs leaving my hand.
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Old 07-25-2010, 10:21 PM
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Re: A/C compressor problems

Any ideas? Can the clutch be replaced on its own? Or does it make more sense to just replace the entire compressor?
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