Chevy Cavalier A/C inop.

« **on:** July 08, 2014, 08:11:57 PM »

My sons a/c quit working on his car. Turn it on and compressor clutch engages, coming fan comes on then after a min. Comp. Shuts off, then comes back on for a min. them shuts off again. I thought it might be low on freon but the gauge on the can says its really high pressure in the red so it ain't low on freon. I'm stumped now? Any ideas? Compressor turns freely by hand. Compressor ain't noisy when running.

« **Reply #1 on:** July 08, 2014, 08:21:14 PM »

Maybe a clogged orifice tube. I have also seen those refill cans overcharge the system and take out the high pressure switch. Just a guess. I worked as a mechanic 18 years ago. It's not my profession. Hopefully Phil will chime in. He knows everything.

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« **Reply #2 on:** July 08, 2014, 08:37:58 PM »

Quote from: Horizonjet on July 08, 2014, 08:11:57 PM

My sons a/c quit working on his car. Turn it on and compressor clutch engages, coming fan comes on then after a min. Comp. Shuts off, then comes back on for a min. them shuts off again. I thought it might be low on freon but the gauge on the can says its really high pressure in the red so it ain't low on freon. I'm stumped now? Any ideas? Compressor turns freely by hand. Compressor ain't noisy when running.

What year?

« **Reply #3 on:** July 08, 2014, 08:56:27 PM »

Oh. Its a 2002. I didn't put any freon in it. Pressure was high and probably would not take Amy.

« **Reply #4 on:** July 08, 2014, 11:39:16 PM »

Check the plug on the pressure switch for a bad connection. it is a known problem.

The only other thing it could be is a restricted drier (unlikely) or a failed expansion valve.

GT

« **Reply #5 on:** July 09, 2014, 06:51:24 AM »

Alright. Will look at that this weekend. Thanks

« **Reply #6 on:** July 10, 2014, 12:52:05 PM »

my uncle has the same car. after taking a tech 2 to it we found that the pressure switch was bad. Replaced it and it works great

« **Reply #7 on:** July 10, 2014, 02:09:15 PM »

Quote from: steves86ta on July 10, 2014, 12:52:05 PM

my uncle has the same car. after taking a tech 2 to it we found that the pressure switch was bad. Replaced it and it works great

Goes right back to the bad connection....

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« **Reply #8 on:** July 11, 2014, 04:50:19 AM »

Is that the pressure switch on left side that's upside down by the radiator and the there are 3 wires in the plug?

« **Reply #9 on:** July 11, 2014, 07:11:12 AM »

Yes

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« **Reply #10 on:** July 11, 2014, 07:34:19 AM »

Quote from: steves86ta on July 11, 2014, 07:11:12 AM

Yes

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Ok. Thank you. I will look at it this weekend

« **Reply #11 on:** July 13, 2014, 09:27:31 PM »

Ok. Tried a new high pressure switch and it did not work. Compressor comes on and cooling fan comes on hooked up a gauge and high pressure is really high so there must be a blockage somewhere so I am going to check orfice tube

« **Reply #12 on:** July 14, 2014, 08:36:47 AM »

Squirt water on the condenser while ac on watch pressure

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« **Reply #13 on:** July 14, 2014, 02:16:12 PM »

What does the low pressure side do?

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« **Reply #14 on:** July 14, 2014, 08:47:10 PM »

I don't have a low pressure side gauge

« **Reply #15 on:** July 14, 2014, 08:57:30 PM »

Quote from: Horizonjet on July 14, 2014, 08:47:10 PM

I don't have a low pressure side gauge

Well shit. How do you have a high, but no low?

« **Reply #16 on:** July 14, 2014, 09:03:18 PM »

Quote from: GT Jets on July 14, 2014, 08:57:30 PM

Well shit. How do you have a high, but no low?

LOL! The high gauge comes with the can you buy at the store..LOL. I was a mechanic a while back and the only manifold guages I have are for R-12

« **Reply #17 on:** July 14, 2014, 09:07:17 PM »

Quote from: Horizonjet on July 14, 2014, 09:03:18 PM

LOL! The high gauge comes with the can you buy at the store..LOL. I was a mechanic a while back and the only manifold guages I have are for R-12

The kit hooks to the low side...

« **Reply #18 on:** July 14, 2014, 09:09:33 PM »

Where are you located?

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« **Reply #19 on:** July 14, 2014, 09:10:55 PM »

Quote from: GT Jets on July 14, 2014, 09:07:17 PM

The kit hooks to the low side...

Well shit! Do I feel stupid....getting old sucks!
Then the guage for the low side reads high then and I don't know what the high side reading is.

« **Reply #20 on:** July 14, 2014, 09:12:09 PM »

Im in Phoenix aka "Hell"...LOL!

« **Reply #21 on:** July 14, 2014, 09:20:57 PM »

Quote from: Horizonjet on July 14, 2014, 09:12:09 PM

Im in Phoenix aka "Hell"...LOL!

Little far or I'd say come use my gauges! Go to harbor freight and grab a set. It won't be the last time you will use them.

Hell buy em. Use em. Then return em. Harbor freight takes everything back.

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« **Reply #22 on:** July 14, 2014, 09:22:36 PM »

http://m.harborfreight.com/a-c-manifold-gauge-set-92649.html

59.99. And Google image search a 25% coupon. Print it out and you are golden

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« **Reply #23 on:** July 14, 2014, 09:24:45 PM »

True. It wont be the last/only time I use them. Ill go there tomorrow and see how it goes. Thanks

« **Reply #24 on:** July 14, 2014, 09:25:26 PM »

Quote from: Horizonjet on July 14, 2014, 09:24:45 PM

True. It wont be the last/only time I use them. Ill go there tomorrow and see how it goes. Thanks

Yeah they will work good enough for you.

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