Question about 1990 Volvo 740

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Climate Control (740 GLE)

My climate control air conditioner keeps cutting in and out every 6-10 seconds when it is on.What could this be?

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When your a/c compressor clicks in and out like that it usually means that your refrigerant level is low. It cycles like that to keep you from damaging the compressor. Hope this helps.

Posted on Sep 11, 2008

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You need to recharge the air conditioner. You can get a do it yourself kit for about 60 bucks. Works well and will explain how it is used pretty thoroughly for you.

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I think these cars have dual climate control. Basically, the driver and passenger can set their own climate. Some like it hotter than others, is the thinking. If this is the case, you need a new climate control module. If not, I am at a complete loss.

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Air conditioner blows hot air after 30 seconds on drivers side, on start up. Passenger side works fine. Air blows out correct vents per setting on air conditioning. Replaced blend door actuator on drivers...


I have had this problem. I am not a mechanic...so to correct the issue temporarily, I simply turn off the car and restart. This has worked everytime for me. In extreme cases, I think you can also remove the AC fuse and start the car, which will also reset the computer. I also think that by taking the climate control off the "AUTO" setting has worked in the past.

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Climate control A/C occaisonally cuts out


It may be low on Freon. You need gauges to tell. There are some cans which come with a gauge. The A/C system is suppose to cut off under heavy accelleration to give you all the power you need. The pause after can show low Freon.
The system is designed to operate in the middle range. You have a low side cutout switch and a high side cutout switch. You want to fill the system to operate in the optimum range which your gauges will show.
Its different pressures for different car companies.
The air out of the dash vent should be around 34 to 42 degrees..

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Climate control air conditioner stops working due to incorrect ambient air temperature


Same car, same problem. Press MODE, FRONT and REAR buttons together to reset tempreture. You probably need to replace the sensor GM part number 15047946 it is in the front grill email me for a picture. chris.abbott@gmx.com

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