Another weird xj ac question - JeepForum.com
 
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post #1 of 4 Old 07-16-2013, 04:23 PM Thread Starter
1993redjeepyj
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Join Date: Oct 2008
Location: North Jersey
Posts: 347
Another weird xj ac question

Hello everyone. Got a stumping question. Bought a new to me 1999 xj 4.0 with 241xxx on the clock. Drives like a dream

Ac doesn't work at all so I brought it to work sucked it down and refilled it with freon.

Still doesn't work

With the ac on inside the Efan kicks on right away
When I disconnect either pressure switch the Efan turns off
Changed the clutch relay to a known good one
And still no power at the single lead for the ac clutch

With the motor running, I jumped power to the ac clutch (I know I shouldn't do it) and it kicks right on and blows ice cold ac


Why am I not getting power threw that lead?

Any help will be great. Thanks in advance,
Steve


1993 Red jeep wrangler YJ, 2.5L-----SOLD
1997 Blue ford f150, 5.4L----SOLD
1996 Jeep Grand Cherokee 5.2L V8------SOLD
1991 GMC Seirra 5.7L----Project truck
2010 Hyundia Accent BLUE------Current DD
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post #2 of 4 Old 07-16-2013, 04:44 PM
sAe23
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1995 XJ Cherokee 
 
Join Date: Apr 2009
Location: Los Angeles / SFV
Posts: 3,275
Maybe try testing the wire for continuity...
Figure out which relay lead that wire goes to and either check the resistance, or, apply power to that lead and see if it fires up the A/C.
If the wire tests good, then something is wrong in the relay socket or one of the other wires going to the relay...
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post #3 of 4 Old 07-17-2013, 06:48 AM
pokeyxj
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2004 WJ 
 
Join Date: Jul 2012
Location: Albuquerque
Posts: 153
Try jumping the low pressure switch.

2000 XJ Limited, 4.5 Rusty's All spring lift; 265/75/16 BFG KM2's; 4.0, aw4, 242.
2001 XJ Sport, 4.5 Rusty's lift, 32x1150x15 Hankook Dynapro MT's. 4.0, aw4, 231, 8.25 rear with power trax locker.
08 f 150 2.5 lift, 33's, arb.
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post #4 of 4 Old 07-17-2013, 09:04 AM Thread Starter
1993redjeepyj
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Join Date: Oct 2008
Location: North Jersey
Posts: 347
Thank you for the quick replys. After tracing wires and trying other relays I began to pull and check every single fuse in both boxes starting with the inside. When I got to the outside box I checked every fuse and realized that a 20 amp max fuse was missing completly. Turns out it was the fuse for the ac compressor. Put a new fuse in with the relay and fresh freon and I have Ice cold air conditioning!!!!!!

Now if only that used front driveshaft I scored off a kid for 25 bucks wasn't totally screwed..... But atleast I didn't have to dump a million bucks into my ac!!!

1993 Red jeep wrangler YJ, 2.5L-----SOLD
1997 Blue ford f150, 5.4L----SOLD
1996 Jeep Grand Cherokee 5.2L V8------SOLD
1991 GMC Seirra 5.7L----Project truck
2010 Hyundia Accent BLUE------Current DD
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