Question about ac compressor
#1
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Year: 1999
Model: Cherokee
Engine: 4.0
Question about ac compressor
Be got a 99 and had to remove the ac compressor last year. In a pinch I out a bypass pulley on it so everything was right with the world again! Now what I don't understand is that when I had it in and plugged in when temps got high enough my e fan would turn on like normal. Or if I was really sitting in traffic or towing I would put the temp control to defrost and that would kick the fan on. (Ac system had a leak anyway so didn't work). My question is ever since I removed the compressor the e fan won't turn on anymore ever? I've tried messing with electrical plug for the compressor and ground it and all sorts of things to get the same operation I had before. Any ideas on why this may be? I guess I don't fully understand the effect that the compressor has on the e fan operation? Any help is much appreciated. Thanks
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Year: 1996
Model: Cherokee
Engine: 4.0 Liter H.O
Be got a 99 and had to remove the ac compressor last year. In a pinch I out a bypass pulley on it so everything was right with the world again! Now what I don't understand is that when I had it in and plugged in when temps got high enough my e fan would turn on like normal. Or if I was really sitting in traffic or towing I would put the temp control to defrost and that would kick the fan on. (Ac system had a leak anyway so didn't work). My question is ever since I removed the compressor the e fan won't turn on anymore ever? I've tried messing with electrical plug for the compressor and ground it and all sorts of things to get the same operation I had before. Any ideas on why this may be? I guess I don't fully understand the effect that the compressor has on the e fan operation? Any help is much appreciated. Thanks
#3
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Year: 1999
Model: Cherokee
Engine: 4.0
You may want to check the fuses in the PDC and JB.
#10 fuse in the JB is for the Rad Fan Relay, A/C Compressor Clutch, Transmission Range Sensor (NSS) and Duty Cycle Evap/Purge Solenoid.
If you transmission works okay and the purge solenoid clicks, fuse #10 is probably okay, but check it anyway.
#10 fuse in the JB is for the Rad Fan Relay, A/C Compressor Clutch, Transmission Range Sensor (NSS) and Duty Cycle Evap/Purge Solenoid.
If you transmission works okay and the purge solenoid clicks, fuse #10 is probably okay, but check it anyway.
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Year: 1999
Model: Cherokee
Engine: 4.0
Thank you for that diagram. I have checked all the fuses numerous times and they are always good. I just don't understand how having the compressor wired in which is a single wire for the clutch and it grounds itself to the body of the compressor would make the fan turn off and on? I even tried messing around and grounding that wire out and still no go. Puzzling to me how that giant piece is the "key" in a sense to making the fan work like it's supposed to. I really hate to wire it to a switch but am getting closer in thinking that's what I should do...
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