A/C Problem on Cherokee

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abomb69 - 17 Jun 2007 02:45 GMT

I have a 93 Cherokee 4.0, when I move the selector to the AC setting the
Auxillary fan comes on and the compressor comes on, the air coming out is
hot, when I try to recharge it, it will not take any freon, this system has
been retrofitted. What else could be wrong

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Spdloader - 17 Jun 2007 03:22 GMT

>I have a 93 Cherokee 4.0, when I move the selector to the AC setting the
>Auxillary fan comes on and the compressor comes on, the air coming out is
>hot, when I try to recharge it, it will not take any freon, this system has
>been retrofitted. What else could be wrong

Not to insult, but are you sure the compressor is coming on? Does it cycle
on and off? Can you visually see it turn once the clutch has locked it in?

Spdloader

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DougW - 17 Jun 2007 09:15 GMT

> I have a 93 Cherokee 4.0, when I move the selector to the AC setting
> the Auxillary fan comes on and the compressor comes on, the air
> coming out is hot, when I try to recharge it, it will not take any
> freon, this system has been retrofitted. What else could be wrong

wrong port? Bad valve in the port or missing fitting in the charging
can. Not bypassing the low pressure cutoff to keep the compressor
running. Or too much gas which will also produce warm air.

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DougW

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Dick - 17 Jun 2007 15:15 GMT

>> I have a 93 Cherokee 4.0, when I move the selector to the AC setting
>> the Auxillary fan comes on and the compressor comes on, the air
[quoted text clipped - 4 lines]
>can. Not bypassing the low pressure cutoff to keep the compressor
>running. Or too much gas which will also produce warm air.

Not sure how the Cherokee is set up (I have '93 ZJ), but I would make
sure the blend door is moving to the cooling side. Otherwise you only
get heat from the heater. If you could get your hands on an original
Jeep service manual, they are extremely detailed in the diagnosis of
HVAC systems. Maybe the library?

Dick

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Posted via a free Usenet account from http://www.teranews.com

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Jon - 18 Jun 2007 19:50 GMT

> On Sun, 17 Jun 2007 03:15:15 -0500, "DougW"
>
[quoted text clipped - 18 lines]
> --
> Posted via a free Usenet account fromhttp://www.teranews.com

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=92649

$30, why guess at a problem...

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The Reverend Natural Light - 18 Jun 2007 19:57 GMT

What pressures do you see from the manifold gauges?

> I have a 93 Cherokee 4.0, when I move the selector to the AC setting the
> Auxillary fan comes on and the compressor comes on, the air coming out is
> hot, when I try to recharge it, it will not take any freon, this system has
> been retrofitted. What else could be wrong

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