1992 dodge a/c


Old 07-16-09, 04:19 PM
Thread Starter
Join Date: Jul 2009
Location: California
Posts: 1
1992 dodge a/c

hello my truck's a/c runs for about 1 minute, turns off for about 30 seconds. it has a pattern of doing this. I don't know what the problem could be. thief of a mechanic charged me 100 dollars to tell me that it was a faulty a/c and that it was gonna go out in a week, this was 3 mos ago.
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Old 07-16-09, 04:43 PM
Join Date: Jun 2008
Location: Eastern Georgia
Posts: 486
Sounds like it is low in refrigerant to me. Have a knowledgable and honest mechanic put the gauges on the system and check the charge.
Old 07-16-09, 08:00 PM
Join Date: Jul 2009
Location: Washington State
Posts: 312
Twister's Right rapid cycling is more than likely a low charge senario. It can also be caused by a restriction in the condensor,but without knowing if you have a full charge or not it's hard to tell being the age it is if it hasn't been updated to r134 you might be hard pressed to find someone to do an
R12 service for a reasonable rate the EPA and gov regs are pretty strict the licence to even get r12 in my state is 12 grand and the r12 isn't cheap either. A conversion can be done but you will have to replace your dryer/accumulator and flush the whole system out R12 oils and R134 don't mix. The flush soivent in my state is about 50 bucks for 16 oz. Good Luck
Old 07-17-09, 03:40 PM
Unclediezel's Avatar
Join Date: Dec 2006
Location: Northeastern PA.
Posts: 2,230
Just for reference, A high side restriction on an early dodge will NOT cycle a compressor. the head pressure will build and the system will Burp thru the pressure relief. If it doesnt burp, it will either "Hydrolock" / pressure Lock the compressor or rupture a hose.

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