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A/c comp not kicking in - 1997 Buick LeSabre

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Hook up A/c gauges, see if you have freon in the system, if to low the compressor will not engage (add freon), check power to compressor.

Posted on Oct 08, 2010


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I replace every thing for an ac on a 1998 sts cadi and it still wont cool

There three main parts to the ac system. comp, dyer and lines. when you replaced them you used and made sure the all orings where in? charged and added dye to check for leaks? insure that the comp is kicking on and that the fan is working?
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Jun 21, 2011 | 1998 Cadillac DeVille

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My dash reads refrigeration low/ no ac. My mechanic added 2 pounds of freon and installed a new relay switch. The ac still will not come on and the compressor still will not turn. Please help!

the compressor may be locked up, make sure that you are getting power and ground to the plug on the comp. and if you are not then the problem may be in the high or low preassure switch, if ther is + and grount then try running a jumper wirefrom the comp. to a ground and one from the comp to the pos. side of the batt. and see if the clutch kicks in and out if it does then run the engine and run the same test and you will be able to tell very fast if the comp. locked up. more often then not it will be a preassure switch

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1986 chevy S10 has no power (12v) at fuse box on the fuse for ac clutch. checked both sides of fuse to ground 00v. ac/heater fuse 12v both sides (fan) works fine

hello, check all fuses, and relays, make sure wires to ac is not broke or has been pinched, sometimes you can run hot wire from battery, to compressor, touch hot side of plug in on comp wire see if it will kick on, if so sounds like a short, if compressor dont kick on with hot wire run to it, tap the out side of comp clutch and see if it kicks on, these compressors will not kick on any way if they are low on freon, once freon is full it should work.

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2 Answers


System is probably a little low on refrigerant. Once it kicks on, it drops the low side pressure enough to trip the low pressure switch. When the system goes off, and the pressure equalizes, it has enough pressure at the low side switch to kick it back on. Add a can of refrigerant with leak detector and stop-leak to find out why it's low. (or get a sniffer to find te leak).

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Jun 18, 2009 | Nissan Frontier Cars & Trucks

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My A/C turns on anff quickly without cold air

look under the car. there is a small wired it sounds like the wired is broken in only takes ten minutes to repair the wired... good luck

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2000 Ford Taurus AC compressor not working;I tried putting freon......compressor has to kick-in in order to take in the Freon; compressor wouldn't kick in ; by pass the low pressure switch, Comp didn't...

the compressor doesn't have to be working for the gas to go in
you connect the gas to the inlet line and as the gas pressure in the system rises , the ac compressor will cut in normally and suck in the rest until the pressures are correct
of course you have to be putting in the correct gas because the switches are different

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