Question about 1991 Lexus LS 400

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Everything works but no power to compressor

Can't locate compressor switch. Checked fuses, look good. What would cause compressor not to work?

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Is it possible that the switch inside the vehicle need to be changed ?

Posted on Oct 31, 2012

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1/ the belt may need to be tightened to turn the clutch on the compressure.2/you may need to check your freon,it may be to low to push the compresser.3/you may have a small leak in 1 of your lines.check all those 1'st.hoped this helped.

Posted on Jun 14, 2009

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1 Answer

Where is the a/c compressor fuse located at?


You'll find the A/C fuse in the fuse box. Check your manual for the location of both the fuse box and the fuse for your specific year and model Dodge car or truck.

If the clutch solenoid on the compressor isn't engaging - it may be due to insufficient refrigerant charge. The A/C is protected by a pressure switch that senses a low charge. This switch will interrupt power from energizing the clutch solenoid - mimicking a blown fuse. You should check for and replace any bad fuse with the correct size replacement. If it still does not work, it should be checked by your auto A/C mechanic for leaks and proper charge.
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1 Answer

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Some possible causes are the system is low on freon, a faulty compressor clutch, faulty low pressure switch, relay, fuse, or control switch.
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the heater fan circulates the air for the a/c. so when a/c is on adjust it with the fan controls. if more problems with it, repost. if a/c compressor is not working. check the a/c relay in fuse box.

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1 Answer

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Hi..my name is Keith..i have never worked on a Festiva...but all the Fords i have worked on..all the relays are under the hood in a black box with a lid on it..and inside the lid..it tells you what everything is..and you do have a problem with voltage reaching the compressor clutch..and i would suspect a fuse or relay first...i hope this will help

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2 Answers

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if your low on freon the unit will not work.low pressure switch cuts it off. or you have a bad a/c clutch asy.

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2 Answers

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there are 2 fuses for the air suspension module fuse #28 in the inst panel fuse box and fuse #22 in the power distribution box in engine compartment make sure the fuses are good the module controls the air susp and the variable steering if the fuses are ok you will have to see if there is power at the module pins # 1, 36, 37, 56, 57, 58

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1 Answer

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on the passenger side inside the wheel well there is a high current relay for the air compressor it is a silver metal relay assy 4 wire plug two smaller wire are the relay power two larger wires are compressor feed. if you jump the two larger wires and the compressor works check the smaller wires for power and ground if ok the relay is bad. usually these relays go bad due to compressor drawing high current and usually need to be replaced

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2 Answers

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