Who Says ZJ Air Conditioning Isn’t Great??? - JeepForum.com
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post #1 of 31 Old 06-19-2021, 04:27 PM Thread Starter
JonS
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Who Says ZJ Air Conditioning Isn’t Great???

Mine is and it was 85° outside

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1998 ZJ
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post #2 of 31 Old 06-19-2021, 04:44 PM
AdidasCJ
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I left mine alone for a long time. Decided I was tired of sweating my nuts off in the hot Southern California summers. Learned I had 2 rubber washers leaking atop the compressor. Replaced the washers, took it for a vacuum, recharged and it runs COOOOLLLDDDDD!

PLUS with the 5.9 fan, even in traffic it runs NICE!

96 ZJ 5.2; IRO 4.5, Bilstein 5100s, 265/75/16, IRO OTK, 5.9 efan, 242.
00 TJ 4.0; MOSTLY stock.
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post #3 of 31 Old 06-19-2021, 08:04 PM
jeepjeepster
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When I bought my 5.9 in Scottsdale AZ, it was 105F and the A/C worked perfect. I think it has a lot to do with the electric fan.

My 4.0 with a complete new A/C (besides the condenser) puts out 44F air when its 85F+, but will get up in the 50's when you stop and idle. That mechanical fan just doesnt work as good as an electric fan at low speeds.

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post #4 of 31 Old 06-19-2021, 08:30 PM
Hoosierman
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When I got my '93's climate control switch fixed, I was able to get very cold AC for about two days. Think it may need recharged now, but yeah I can't complain.

Carpe Viam, qui sum.
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post #5 of 31 Old 06-20-2021, 12:06 AM
JaimeZX
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I have a leaking compressor. Was quoted over $1000 for R&R. Instead I buy a large can of r134; most of that fills the system in the spring, and I give it a little top-off in early August. Usually I'm g2g through the warm weather. Would rather have a perfectly-functioning system, but the Jeep will be dead long before I approach $1000 at this rate. Now, if the leak gets worse (as they tend to do) I may have to re-evaluate this process.

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post #6 of 31 Old 06-20-2021, 12:40 AM
CountryZJ
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Mine needs a recharge and the actuator to change from defrost to vents and what not anyone know where i can get one for a 97 gc laredo
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post #7 of 31 Old 06-20-2021, 01:20 AM
jeeper357
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I NEEED to get mine evacuated and recharged at a shop. Atleast while the compressor clutch still has enough 134 in there to kick on and off.
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post #8 of 31 Old 06-20-2021, 02:49 AM
Timo_90xj
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With the original compressor, new evap core and condenser, and the HVAC box thoroughly cleaned when it was open, my AC blows right around 35-40°F from the center vents when it's 80-85°F outside. 85°-90°F is about the max. we ever get here, and most of the summer daytime temps are between 65°-75°F.

It's sort of funny that factory-new VWs and Audis (they all are imported through my workplace) take considerably longer to blow cold air compared to my 23 year old Jeep

1998 Grand Cherokee 5.9 LX daily driver, 1.75" BB, 32" KM2s, HPD30 Eaton e-locker/D44a stock LSD, 4.56 gears, custom- fabbed tube bumpers and tube fenders,...


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***Under construction***
1990 XJ (4-door), 4.0 I6, AW4, NP242, PBR 42" tires, Unimog 404 portal axles, 110" WB, full cage + uniframe completely rebuilt, front 3-link + panhard / double triangulated 4-link rear,... ***SOLD***
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post #9 of 31 Old 06-20-2021, 08:54 AM
AdidasCJ
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Quote:
Originally Posted by JaimeZX View Post
I have a leaking compressor. Was quoted over $1000 for R&R. Instead I buy a large can of r134; most of that fills the system in the spring, and I give it a little top-off in early August. Usually I'm g2g through the warm weather. Would rather have a perfectly-functioning system, but the Jeep will be dead long before I approach $1000 at this rate. Now, if the leak gets worse (as they tend to do) I may have to re-evaluate this process.
Do you know where the leak is? Could try a UV light and yellow lens glasses. Youll see the freon glowing under the UV/yellow lens.

Mine leaked due to the two seals at the top of the compressor. VERY simple and cheap to fix. Had it recharged and good to go again!

96 ZJ 5.2; IRO 4.5, Bilstein 5100s, 265/75/16, IRO OTK, 5.9 efan, 242.
00 TJ 4.0; MOSTLY stock.
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post #10 of 31 Old 06-20-2021, 02:58 PM
JaimeZX
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Yeah I've injected dye; not 100% clear where it's coming out but I think it's in the front because the pulley slings the freon everywhere. lol That said - I'd be interested if you have any pics of that work; I'd love to double-check!

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post #11 of 31 Old 06-20-2021, 04:20 PM
AdidasCJ
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Quote:
Originally Posted by JaimeZX View Post
Yeah I've injected dye; not 100% clear where it's coming out but I think it's in the front because the pulley slings the freon everywhere. lol That said - I'd be interested if you have any pics of that work; I'd love to double-check!
The two bolts atop the compressor, unbolted both, both washers were split. Went to ORylies and found a multi pack of the seals. Matched the ones I needed and reinstalled; bolted back down. Done.

96 ZJ 5.2; IRO 4.5, Bilstein 5100s, 265/75/16, IRO OTK, 5.9 efan, 242.
00 TJ 4.0; MOSTLY stock.
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post #12 of 31 Old 06-20-2021, 08:08 PM
riiz
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Quote:
Originally Posted by CountryZJ View Post
Mine needs a recharge and the actuator to change from defrost to vents and what not anyone know where i can get one for a 97 gc laredo
Your actuator is controlled by engine vacuum, so you need to find where you have a leak. There is a vacuum line that go throughs the fire-wall behind the passenger-side valve cover. Follow that line and tee-fitting for leaks.
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post #13 of 31 Old 06-20-2021, 09:04 PM
CountryZJ
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Quote:
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Quote:
Originally Posted by CountryZJ View Post
Mine needs a recharge and the actuator to change from defrost to vents and what not anyone know where i can get one for a 97 gc laredo
Your actuator is controlled by engine vacuum, so you need to find where you have a leak. There is a vacuum line that go throughs the fire-wall behind the passenger-side valve cover. Follow that line and tee-fitting for leaks.
nah the piece that actually changes the vent mode is broke
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post #14 of 31 Old 06-21-2021, 05:34 AM
JaimeZX
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I was so tripped out by the Ghost in the Machine before I knew it was vacuum-controlled. Every time I get on the gas, every hill on the freeway, my vents change.

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post #15 of 31 Old 06-21-2021, 05:58 AM
PolkaPower
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Limited is electric.


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