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A/C cause overheating, why?

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  #1  
Old 05-01-2010 | 11:46 AM
ikala476's Avatar
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Unhappy A/C cause overheating, why?
Got problems with overheating. Change water pump and thermostat, but problem continue. Car runs ok until I start the A/C, the temperatures go all the way up in less than 5 minutes after the A/C is on I turn it off and temperature goes to normal.
 
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  #2  
Old 05-01-2010 | 11:47 AM
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Are the cooling fans work properly?
 
Last edited by way2old; 05-01-2010 at 11:49 AM.
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  #3  
Old 05-01-2010 | 12:21 PM
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From: Mt. Pleasant, NC
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Check to see if the radiator fan is coming on when you turn on the a/c. It should.
 
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  #4  
Old 05-03-2010 | 10:24 AM
ikala476's Avatar
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Default Looks ok for me
The two fans start ok, what Im not sure if they are working ok. I notice they turn a littler slow. Thanks
 
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  #5  
Old 05-04-2010 | 06:49 AM
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Some cars have a two speed fan. Your fans may not be working right on the high speed causing the overheating. It could be a bad fan relay causing the fan not to run on the high speed.
 
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