| Re: engine temp goes up when running air conditioning [message #781691] |
Tue, 18 July 2006 04:04 |
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ghadley_00 [at] yahoo.com wrote:
> Hi,
>
> I have a 2000 Mazda 626 which recently began overheating when I run the
> air condition. Without running the AC the car has been able to tolerate
> 2+ hours of stop and go traffic while maintaining the engine temp at
> near mid gauge *around 3.5 the temp start goign up near top gauge, but
> then came down running hor air into the cabin). The coolant levels
> seems ok at present as well. Any suggestions on what could be wrong /
> things I could do? Would degreasing the engine possibly help? Any
> particular parts of the engine I should look for debris?
>
> Thanks,
>
> George
>
> ghadley_00 [at] yahoo.com
>
are your fans working? Not sure about Mazdas, but it seems common that
once you turn the AC on, the electric fan comes on.
Why does it do this? The condensor is mounted in front of the radiator,
and when you turn on the A/C, it dumps the heat out... right in front of
the radiator, and if your cooling system is marginal (and it sounds like
yours might be) it can't hack the extra load and starts overheating.
Ray
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