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Old 18-05-2010, 10:03 PM   #1
fernsantos
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Default Au I6 Overheating With Aircon On

This as happen twice with my car both times when I have the aircon on.
The first time I was in traffic with the aircon on and I noticed the temperature starting to climb.I pulled over turn the aircon off and the temperature went back to normal.

Today as it was raining I turned the aircon on in traffic to defog the windows the temperature started to climb as well as soon as I turned the aircon off it went back to normal.

Any ideas will be much appreciated on what the problem might be and the solution.

Thanks

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Old 19-05-2010, 12:54 PM   #2
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When it's starting to overheat, get out and check if both thermo fans are running or not.
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Old 19-05-2010, 01:12 PM   #3
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Thanks I will have a look if one or both of the fans aren't working what could be wrong and is it expensive to fix.
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Old 19-05-2010, 02:25 PM   #4
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Had a similar problem. turned out someone before I owned my car had disconnected the thermos buy just yanking on the wires and snapped them, so it was an easy fix
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Old 19-05-2010, 03:06 PM   #5
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Overheating - is the failsafe system intervening or is it just via the gauge you think its overheating? If it's genuinely overheating (ie to critical levels) the computer will start cutting power to your engine.
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Old 19-05-2010, 05:38 PM   #6
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Yes that's what happened both times no power to the engine due to the temperature
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Old 24-05-2010, 03:41 AM   #7
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Usually though the failsafe kicks in when the needle actually hits the red (and that's about the 135 deg C mark too.

I'd be checking the relays for the thermos for sure. I'd also be checking the remainder of your cooling system out as well ... just to be on the safe side.
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Old 24-05-2010, 05:00 PM   #8
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thermo fan for me thanks.

Had same issue.
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