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Old 07-06-2013, 02:22 PM
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Do I have to loosen the pulley belt to loosen the serpentine belt?
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Old 07-06-2013, 03:24 PM
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Just bought a new A/C compressor, Expansion valve and Receiver/Dryer for my 88' xj. I purchased a bottle of PAG100 8.1oz. I heard I should drain any oil the compressor comes with, then refill to a certain amount.

Does anyone know how much PAG oil I need to put in the compressor?

I heard that I should put 4oz in compressor and somehow put 4oz in the dryer. Is this true? I've always seen it only added to the compressor.

Please respond quickly as I am starting this project this afternoon. Thanks for the help!
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Old 07-06-2013, 04:06 PM
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Originally Posted by DESERTXJ206
Just bought a new A/C compressor, Expansion valve and Receiver/Dryer for my 88' xj. I purchased a bottle of PAG100 8.1oz. I heard I should drain any oil the compressor comes with, then refill to a certain amount.

Does anyone know how much PAG oil I need to put in the compressor?

I heard that I should put 4oz in compressor and somehow put 4oz in the dryer. Is this true? I've always seen it only added to the compressor.

Please respond quickly as I am starting this project this afternoon. Thanks for the help!
There should be a sticker on the jeep somewhere that says how much refrigerant to use. It's like 1.25oz. System should be vacuumed to "retard" then filled
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Old 07-06-2013, 04:14 PM
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Originally Posted by motoo344
Replaced the the cat yesterday since the slip in pipe rusted through and fell off. Used the catco cat and replaced the muffler and tailpipe as well. Took it for a 5 minute ride to check for leaks and it looked good.

Got a check engine light today with the p0138 code for the rear o2 sensor. Crawled under there and the wires are good, fuses are good. Should I just replace the o2 sensor? Any chance the new cat fouled it or the computer just needs to relearn the new cat?

Car is running fine, just have the light and its annoying.
Just replace the o2. Do both of them while you're at it.

When I swapped out a muffler last time I had to beat it off (lol) the cat. Right after... o2 CEL code. I think it couldn't take the pounding.
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Old 07-06-2013, 04:15 PM
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Originally Posted by sycoglitch

There should be a sticker on the jeep somewhere that says how much refrigerant to use. It's like 1.25oz. System should be vacuumed to "retard" then filled
As for refrigerant I read somewhere that using a r12 system with r134 it has 90% the capacity of the r12.

As for the oil info I need I found that the compressors needs 5-6 ozs and each other part I replace needs 1-1 1/2ozs.

Do I just pour the oil into one of the lines on the dryer?
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Old 07-06-2013, 04:18 PM
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Originally Posted by DieselD
Just replace the o2. Do both of them while you're at it.

When I swapped out a muffler last time I had to beat it off (lol) the cat. Right after... o2 CEL code. I think it couldn't take the pounding.
Thanks. I will see if the codes come back and then replace them, how hard is the front to replace? The rear is super easy to get to and unhook, haven't looked for the first one yet.

Funny, I went to do the same thing. The muffler was and still is rusted to the cat. I went to hit it with a mallet and the other side of the the cat, I suppose the part the connects to the downpipe, just disintegrated, so I bought a cat and just replaced all of it.
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Old 07-06-2013, 04:21 PM
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Yea it happens.

Front one isn't that hard to get too. It's on the down pipe, up by the engine bay.
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Old 07-06-2013, 04:26 PM
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Originally Posted by DESERTXJ206

As for refrigerant I read somewhere that using a r12 system with r134 it has 90% the capacity of the r12.

As for the oil info I need I found that the compressors needs 5-6 ozs and each other part I replace needs 1-1 1/2ozs.

Do I just pour the oil into one of the lines on the dryer?
You are digging deep. Text me at 5035155023
I'm an ac specialist.
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Old 07-06-2013, 05:19 PM
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Failed at trying to remove 8.25 chry. rear spool at local yard.Removed spider pin,axels,bearing caps,but wont budge from housing!
What am I missing?bigger pry bar/hammer..Its a limited slip 4.11 gears.Does pinion nut need to be removed? Thanks.
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Old 07-06-2013, 06:06 PM
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Originally Posted by stew
Failed at trying to remove 8.25 chry. rear spool at local yard.Removed spider pin,axels,bearing caps,but wont budge from housing!
What am I missing?bigger pry bar/hammer..Its a limited slip 4.11 gears.Does pinion nut need to be removed? Thanks.
Pry harder
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Old 07-06-2013, 06:36 PM
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Originally Posted by midwaytek
98 xj... oil on oil cap is muddy...losing radiator fluid.
The one time this happened to me it was a head gasket.
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Old 07-06-2013, 06:40 PM
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Default AC Compressor

ODGREEN...you're an AC spec? Do you know how to hot wire a compressor on a '98 XJ? Firestone says the internal switch doesn't work so the compressor/drier/accum/fixed orifice pipe have to be replaced. I'd like to make sure it isn't just a bad dash switch first. TIA.
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Old 07-06-2013, 06:50 PM
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Thanks OD,ill Try 3' pin bar and BFH.What size socket do I need for pinion nut?
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Old 07-06-2013, 06:58 PM
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Hello cherokee's fans. I NEED HELP, I have a problem with my cherokee 93, it doesn't start, I replaced the ignition coil, the crank position sens and the camshaft position sensor and there isn't spark in the sparkplugs. I replaced the components 'cos sometimes it shutdown sudenly so a mechanic recomended to change this components. what can I do?
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Old 07-06-2013, 08:17 PM
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What are the steps to loosen the serpentine belt? Do I have to loosen the pulley bolt?
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