Question about 2003 Buick Regal

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Aircompressor clutch will not kick in.2003 regal

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No power to the relay or a defective relay.

Posted on Mar 14, 2011


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2003 buick

Your buick dealer is the place to go.

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Aircompressor relay location

usually there are 2, clutch and fan.
which engine?
some engines, they move all this stuff around
in the bay
lets try for free. the dealer.
go to parts page and see>>?"
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no more guessing for ever, its there forever. (we hope)
i can post it because this NON ENGLISH, in the URL..... rats
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1 Answer

Compressor and fans do not turn on until rev engine

I passed this question the first time I read it, so I will take a stab at it now.
The fans don't come on until the compressor has pumped the freon pressure up to say 150 or 200 psi. And the compressor clutch has to have voltage to engage the clutch.
I wonder if the clutch is going and needs 14 volts instead of 12 to engage ? Or the relay that powers the clutch ?
Speeding up the engine would increase voltage from the alternator.
This is assuming the serpentine belt is tight and everything else is working correctly.
I think I would swap the relay with another and put a meter on that circuit to the ac clutch to see what it takes to engage it.

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1 Answer

The clutch on the compresser will not kick in i have a hot all the way to the compressor f 150 4x4 2003

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Air conditioner clutch will not engage. also my car has auto climate control and the external temp. light always reads 30 degrees.

That is why the A/C clutch is not coming on.If the temp is below 50 degrees the auto control will not allow the compressor to kick in to protect the compressor.You have to check the codes for the body control module.It should show a code for the outside temp sensor.You could have a bad sensor or wiring.If you disconnect it it should show -40 degrees.check wiring and connections.Hope this helps.Good luck.

Apr 05, 2010 | 1999 Buick Regal

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