Engine temp. needle will not move and the A. C. will not come on. Replaced the A. C. relay under the hood and it did not help. Can short out the connections and the A. C. will come on but will not

Asked by Jun 17, 2015 at 10:04 PM about the 2002 Chevrolet Impala Base

Question type: Maintenance & Repair

New fan bank , new radiator and neew hosed . A. C will not come on and temp needle will
not move

4 Answers

22,615

need some more info please?

3 out of 3 people think this is helpful.
17,945

It sounds like your low on freon. I'm not sure what the engine temp has to do with anything

22,615

im not sure if hes talking compressor clutch>power or blower fan related?

1 out of 1 people think this is helpful.

Ok , thanks for the response. More Info as , Car has been running a little above normal in temperature . once a month or so add about a half gallon of water, no problem recently the temp needle went all the way up to hot, stopped added about a half gallon of water , it was not steaming and the engine did not appear to be hot , the water in the radiator was not boiling , headed on home and turned the A. C. off , by the time I got home it was showing over heated again, took car to garage ,. mechanic said the only fan of the two out front that was working was the one that comes on when the A. C. is on . He replaced both fans and the radiator and new hoses, over #$400.00. I drove home about 3 miles. no problem. Next morning I go to town and notice the temp needle all the way down on cold and did not come up all then way to town and the A.C. will not come on , fan blows but the compressor does not engage. had the A. C. system rebuilt last year , and has been working good. It is not low in Freon. I replaced the A. C. relay under the hood and the compressor still does not engage. I can short across the relay terminals and the A. C . comes on , the compressor engages and it blows cold air. If I turn the a.c. off while shorted out it does not quit. . This is a 2002 Chevrolet Impala with 100k miles , V6 engine . I bought it new and the wife has put most of the miles on it..

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