Q45 RUNS HOT WHEN A/C IS USED ON HOT DAYS

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bpeesy
Posts: 16
Joined: Thu Dec 29, 2005 7:58 pm
Car: 1990 q45

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My Q will run hot whenever I use my A/C during the daytime. at night I'm ok - any ideas?


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elwesso
Posts: 30810
Joined: Sun Feb 23, 2003 4:52 pm
Car: 94 Infiniti Q45t 5 spd
2007 BMW M Coupe
2007 Infiniti G35 S 6MT
Location: Indiana
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is your condensor fan coming on?

Bad Tstat, weak radiator ar ethe likely cause if the fan is coming on.

bpeesy
Posts: 16
Joined: Thu Dec 29, 2005 7:58 pm
Car: 1990 q45

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the fan is turning, but I don't here a noise to indicate that the fan is actually working. On my toyota, when the radiator fan comes on I here the idle raise on the car and can hear the pull from the fan clutch. But on the Q I don't hear anything. the fan is turning, but I thinks that's just because it's automatically supposed to. I can't tell if its working

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elwesso
Posts: 30810
Joined: Sun Feb 23, 2003 4:52 pm
Car: 94 Infiniti Q45t 5 spd
2007 BMW M Coupe
2007 Infiniti G35 S 6MT
Location: Indiana
Contact:

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thers another fan in front of the condensor that should be on...

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AZhitman
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Go through the entire cooling system.

Pull radiator, flush if necessary. Clean condensor (almost always the culprit) by pressure washing it from the inside-out, flush rest of cooling system, new t-stat, new temp sensor, check hoses and belts, refill with distilled water (70%), coolant (25%) and a bottle of Water Wetter.


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