ac runs sometimes

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06-19-2015, 03:14 PM

cjfrigo

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Year: 2000

Model: Cherokee

Engine: 4.0

ac runs sometimes

00 cherokee just refilled my ac system runs fine for like 10 15 min then shuts off ??? Any help?

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06-19-2015, 06:11 PM

CCKen

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Year: 1999

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Quote:

Originally Posted by cjfrigo

00 cherokee just refilled my ac system runs fine for like 10 15 min then shuts off ??? Any help?

Nice detail in your post. Very good...

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06-19-2015, 07:19 PM

extrashaky

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It's probably the same thing CCKen described here. Or maybe not.

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06-19-2015, 11:09 PM

El_Guapo

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Quote:

Originally Posted by cjfrigo

00 cherokee just refilled my ac system runs fine for like 10 15 min then shuts off ??? Any help?

Could be any number of reasons, but I can't point you in the right direction without more specifics. What are your ambient conditions? Did you fill it yourself?

R134A systems are a little more sensitive to filling than the older R12 systems. Just a tick over can cause the protection switches to kick out on high head pressure. Just a tick under will cause the evaporator to ice up and summarily kick out on the low side.

Next is your freebie test - Watch the compressor and have a helper cycle the A/C on and off. Does the clutch stop instantaneously or does it drag when shut off? Does it make a strong engagement or does it feather in when turned on? If you don't have the positive off/on then you have a clutch issue. These clutches have typically seen enough wear around 100k-120k miles that adjustment is necessary.