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Unread 08-14-2013, 07:05 AM   #1
99_XJ_
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1999 XJ Cherokee 
 
Join Date: Jul 2013
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A/C not working

I recently replaced my A/C clutch and compressor but now there is no A/C and no heat. I checked the clutch and its spinning, the compressor is on, and the lines are cold so there's freon in the lines, and I checked the fuse panel and they're all fine. Idk what else the problem could be...

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Unread 08-15-2013, 07:32 PM   #2
1CleanTJ
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you say no a/c and no heat. is your fan speeds working ? do you feel air blowing out of the dash vents ? you say you changed the compressor, did you bring it to a shop to have the a/c recharged ?
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Unread 08-16-2013, 07:26 AM   #3
99_XJ_
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Quote:
Originally Posted by 1CleanTJ View Post
you say no a/c and no heat. is your fan speeds working ? do you feel air blowing out of the dash vents ? you say you changed the compressor, did you bring it to a shop to have the a/c recharged ?
no fan speeds working at all and there is minimal air coming out of the vents and I had it recharged too... I had a friend tell me it could be the resistor but idk...
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Unread 08-16-2013, 04:01 PM   #4
psychoteen101
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sounds like the blower motor resistor is bad, common on jeeps. Or could be a bad blower motor. Id test/replace the resistor first.
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Unread 08-16-2013, 05:56 PM   #5
1CleanTJ
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sounds like a bad fuse or blower motor. although blower motor resistors do get corroded and go bad, usually you will have high still. you can start by checking it though, its accessable under the passenger dash. the blower motor can be pulled out from under the hood, on the passenger side firewall, 3 or 4 bolts hold it in
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Unread 08-16-2013, 08:43 PM   #6
CCKen
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Here's a shematic of the blower motor circuit. Note the fuse.

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Unread 08-19-2013, 12:55 PM   #7
99_XJ_
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how would i go about testing to see if there is orient a problem with the motor/resistor?
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Unread 08-19-2013, 07:05 PM   #8
AZ Jeff
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Quote:
Originally Posted by 99_XJ_ View Post
I recently replaced my A/C clutch and compressor but now there is no A/C and no heat. I checked the clutch and its spinning, the compressor is on, and the lines are cold so there's freon in the lines, and I checked the fuse panel and they're all fine. Idk what else the problem could be...
You say "no heat" and "no A/C". I assume you really mean the blower that pushes air through the heater box is not working. Am I correct?

If so, check the two fuses noted by others in the schematic they posted.
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Unread 08-20-2013, 07:19 AM   #9
99_XJ_
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Quote:
Originally Posted by AZ Jeff View Post
You say "no heat" and "no A/C". I assume you really mean the blower that pushes air through the heater box is not working. Am I correct?

If so, check the two fuses noted by others in the schematic they posted.
I checked the fuses and they weren't blown how would I check to see if the motor is blown?
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Unread 08-20-2013, 07:46 AM   #10
AZ Jeff
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Do you own a VOM? If not, you can pick one up for about $15 at Radio Shack or most home improvement stores. Use that, along with the schematic posted above, and you can figure out where you loose the 12V that drives the blower motor.
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