Question about 1996 Chevrolet Tahoe

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A/c compressor how can i check the a/c compressor to make sure it's working before i charge the system with freon..some one told me to use a jump wire on the terminals to the ac/comprssor if the clutch moves in and out the compreesor is good is this so

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Hello. find your receiver bottle, it is black or silver with 2 lines going into it (usually on side of engine toward rear, it will also have a switch into the side of the bottle with two wire, disconect the electrical connector from switch, then put a paper clip between both female connectors. turn on the vehicle and AC, if the compressor turns on and off each time you do this it is working. it is possable for the clutch to work and not the compressor, be sure to put the system under a vacuum before injecting R134....and most important use the correct amount of specified oil. good luck, marty

Posted on Jun 04, 2009

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My 1998 Chevrolet Silverado will not take freon but the air condition does not blow cold air


Not enough info.with the compressor running and the charge line on the low pressure service port( the big line)it should charge. Be sure the compressor is running. If it's not: There is a low pressure switch in the big line. to check it disconnect the 2 wire connector, use a paper clip to jump between the 2 wires. If the compressor runs either the switch is bad or the pressure is not getting into the system at the fill port

Jun 15, 2014 | 1999 Chevrolet Silverado 1500

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I am trying to troubleshoot my 2002 saturn l200. My AC is not working. The button light comes on, but I feel the compressor not coming on. I check the fuse and it's ok?


most likely you are low on freon and the pressure switch will not allow the compressor clutch to engage. one way to tell if that is what is happening is to find the pressure switch located on the low pressure side of the system. you can tell witch line is the low pressure side because it is larger in diameter than the high side.Then take a wire and jump the two wires that go to the switch together.If the compressor starts to run then charge the system with freon.If it does not run then check the relay.

May 05, 2014 | Saturn L-Series Cars & Trucks

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Have no power to a/c compressor for my 1993 turbo diesel non-power stroke f350. checked fuses they are okay. jumped hot wire and ground over from battery and the compressor kicks on.


You have either a bad pressure switch or your system is to low on freon. pressure switch is located near evaporator close to fire wall to check use jumper wire across the 2 terminals if compressor turns on add freon the chances are that the switch is ok. make sure to add the freon on the low side of system and use a gauge on the fill hose (the better fill kits have the gauge on the hose). If you get cold air out the vents and then after a bit it doesn't seem cold you have a leak in the system. Make sure to use the correct type of freon should have a sticker under the hood. I think it should be R-134A but make sure the sticker will tell you the correct type.
Thanks for using FixYa Hope this sheds so light on your problem

Jul 15, 2011 | 1993 Ford F350

1 Answer

DASH READS REFRIGRANT VER LOW CORESSOR OFF


This is telling that it needs to be charged with Freon, so compressor automatically turns off, as to save unit as, if no Freon, no sense having compressor run. You need to have it charged with Freon, and have system checked to make sure no leaks at same time.Almost any service center can charge system and check to make sure no leaks, then compressor should come on and work fine. Thanks Mike
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Jul 03, 2011 | 1997 Cadillac Seville

2 Answers

A/c compressor clutch will not engage


In this case, I would suggest that the low freon pressure switch has activated and prevents the compressor from running and damaging your system in your 15 year old vehicle. To prove this, find the switch and short the switch out and see if the compressor kicks on.

How do you fix this? Get the system recharged. Also have the mechanic check for leaks. The freon escapes somehow ...

Thanks for your question today.

Mar 03, 2011 | 1996 Cadillac DeVille

1 Answer

Ac compressor has been change and charged with three can and the blower work but the compressor will not come on


mcdevito75 here, You may need even more freon in the system. If you know where the A/C clutch switch is you can jump it with a wire to get the compressor going to circulate the freon. Best bet let your local shop handl this job.

Jun 17, 2010 | 1995 Buick LeSabre

1 Answer

A/C COMPRESSOR WONT ENGAGE. NEW A/C COMPRESSOR INSTALLED . Checked fuse panel, fuse OK.


Diod you charge the a/c, if its low, by that I mean if it needs a charge the compressor has a cut out switch inline with the power wire going to the a/c compressor clutch(it can also be referred to as a fuse depending on who you arer speaking with), it is there to protect the compressor from burning out.
You see if the a/c system has a leak....any air conditioning system not just a car.... along with the freon leaking out a/c compressor oil can also leak out with it especially if its on the high side lines or the compressor front shaft seal(which is behind the a/c clutch). That is why it is equally important to buy a 1 pound can of freon + oil combo and a freon 1 pound can with leak dye combo in it, if its down a little in other words the compressor turns on but isn't real cold then only install the freon + leak dye as the leak dye will travel through the system and expose its colors when it appears at the site of the leak, giving you a visual on where the leak is.
try adding some freon to the "low" pressure side of the suction lines of the compressor(larger lines with a larger fill port, be certain to purchase the proper fill hose and attachment needed for your particular car.
The auto parts store will assist you in this proceedure.
Once
You may have to locate the a/c compressor cut out I think its a threaded one that has a black electrical connector on top, remove the connector and jump the wires together to get the compressor to turn, then add the freon. Walla, the compressor is working and accepting the charge, if by jumping out the low pressure cut out switch no sound is even heard at the clutch you may have to replace the low switch as well.
This test also tells you if the a/c compressor and clutch are working properly, if you jump it out and it doesnt engage replace the clutch. You will need a puller, Auto Zone will lend you the tools for the job free if you buy the parts from them,cool aye?
Happy Motoring!!

Jun 12, 2010 | 1995 Oldsmobile Cutlass Ciera

2 Answers

How do I add freon to the A/C on my 1993 Subaru Impreza ?


Hi DO NOT BYPASS the tryrister switch!!!!!!!!!.

You can safely add R12 (freon) from a can with the system not running ,when you have enough gas and oil mix added to the system the compressor will stsart automatically the problem you have is not knowing if there is a leak in the system,as you need to check this as venting R12 to the atmosphere can land you in prison if caught !!!!,.The best advice I can give you is take the car to an Air-con specialist and he will carry out all the checks on the system for you and re-gas the system properly.

Jul 10, 2009 | 1993 Subaru Impreza

2 Answers

The compressor is not engaging on 96 pontiac transport van


Check wires going into it from harness.. make sure there is no break.. If not have compressor checked at autozone or advanced auto.

Jul 04, 2009 | 1994 Pontiac Trans Sport

1 Answer

1995 Cadillac Deville


In my 1990 Cadillac Deville there is a sticker that says that one can reset the computer that controls the compressor by disconnecting the battery for a few minutes and reconnecting.

Did you disconnect the battery to reset the a/c system?

The symptoms you are describing lead me to believe that there is a safety feature that prevents the compressor from engaging when the compressor has been run for any length of time without at least .5 lbs. of freon in the system.

You said that you had to run a hot wire to charge it up with freon. But, if you ran it without freon, it may have automatically invoked the 'safety' feature.

I have seen this happen on my 1990 cadillac. I haven't had any problems on my 1997 Cadillac Limousine, because I never had a low charge on that car.

Aug 08, 2008 | 1994 Cadillac DeVille

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