Question about 1998 Pontiac Sunfire

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Ac clutch wont engage - 1998 Pontiac Sunfire

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Check the pressures of the a/c system. if there is not enough freon the compressor clutch wont engage

Posted on Jul 11, 2010

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Posted on Jan 02, 2017

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1 Answer

Why ac clutch will not engage


2 reasons...no power to clutch, either blown fuse or no charge in the A/C system

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1999 GMC air cond. AC clutch wont engage. system is charged. relay, fuze,and low pressure switch are replaced.


ac compressor clutch coil open or short. wire cut or open to ac clutch.2 wires one is ground the other power, remove connector ac compressor then probe with test light between the two wire

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My 2003 vw jetta ac clutch wont engage. you can hear the car idle up as if the ac has engaged but then within in 2 seconds its stops at this time when it idles up i get a 12v signal at the compressor


IS THE SYSTEM FULL OF FREON? IF ITS LOW THE A/C CLUTCH WILL NOT ENGAGE. ITS KIND OF LIKE A FAIL-SAFE FOR THE SYSTEM. IF THE FREON IS FULL AND YOU HAVE 12V TO THE COMPRESSOR I WOULD CHECK OUT THE CYCLING SWITCH ALSO.

Jun 29, 2012 | Cars & Trucks

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A/c has full freon but the compressor clutch wont engage. i have found that the plug going into the compressor is not getting any power. what could be the problem?


On the low pressure line of the ac you have a pressure switch which allows the compressor to come on once a certain pressure is reached, and it will cut the compressor off if the pressure is too high or too low. Look at your ac hose and find the switch *you will see wires connected to it* you may need to replace this switch. You can use a test light to see if you are getting power to the switch. You should check you fuses, and the ac relay witch is usually in a black plastic box under the hood.

Aug 10, 2010 | 1997 Ford Crown Victoria

1 Answer

Compressor clutch wont engage. sometimes on sometimes off. now just off


Trace the clutch wires from the compressor clutch to the nearest plug that you can disconnect. With the engine running, and the AC set to max, check to see if the clutch is engaged. If not, unplug the clutch wires and check the voltage going to the clutch. If the voltage is around 12 volts or more, then your clutch is shot and you will have to replace the clutch and compressor (sold as one unit). If the voltage is low or zero, then your AC is not calling for the compressor to run...a pressure or temperature sensor in your AC is out. Hope this helps.

May 19, 2010 | 1991 Pontiac Trans Sport

1 Answer

AC blowinghot air


Locate wires coming from compressor clutch and trace to nearest plug that you can unplug. Turn on A/C to max cooling. If clutch not engaged (center of compressor drive pulley not spinning with pulley), unplug compressor clutch wires and use multimeter to check voltage going to compressor clutch. If voltage is around 12 volts or more, then clutch should be engaged when plugged in. Plug clutch wires back in (with motor still running and ac set to max). If clutch still not engaged, then clutch definitely bad because 12V signal should engage it.

May 08, 2010 | 2002 Lincoln LS

1 Answer

1997 pyzar 1.5 ac full of gas but ac wont work


CHECK AC COMPRESSOR CLUTCH SHOULD BE ENGAGED OR RUNNING WITH AC SWITCH ON POSITION.IF NOT CHECK AC COMPRESSOR CLUTCH FUSE AND RELAY.IF BOTH GOOD AND POWER IS GOING TO AC CLUTCH.YOUR CLUTCH IS OPEN.IF ALL LOOKS GOOD YOUR AC LOW PRESSURE SWITCH IS BAD.COMPRESSOR SEIZED OR YOU HAVE TOO MUCH MOISTURE IN AC SYSTEM.

Mar 10, 2010 | 1991 Daihatsu Charade

5 Answers

Air conditioning clutch


check to make sure the a/c system is fully charged, if it is not the system will not turn on, if you need more help get back to me. please rate my fix as i strive to be the best

Apr 24, 2009 | 2000 Dodge Durango

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