Question about 1997 Jeep Grand Cherokee

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97 Grand cherokee, A/C blows Hot air. A/C light on dash is lit. Compressor clutch is not engaging. Where do I start to diagnose the problem?

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  • Richard Scordino May 11, 2010

    Unless you have a good set of gauges and an evacuation pump as well as lots of a/c experience, you will end up wasting money and time and not get the results you are looking for...bring it to a shop and have it diagnosed.

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Check the fuse for the a/c, then I would have it checked to see if there is enough freon in the unit.

Posted on Jun 20, 2009

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Arcondition blows hot air, freon in the blue and clutch on compressor engage


Make sure your blend door is closing all the way and that the actuator actually works.

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Air conditioning works but will not deflect to blow at the driver, just goes through the defroster


  1. Air conditioner system is discharged. Have the system evacuated, charged and leak tested by an MVAC certified technician, utilizing approved recovery/recycling equipment. Repair as necessary.
  2. Air conditioner compressor clutch not engaging. Check compressor clutch wiring, electrical connections and compressor clutch, and repair or replace as necessary.

May 11, 2011 | 2004 Jeep Grand Cherokee

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When I first start jeep, air conditioner blows cold. THen it starts blowing hot, humid air. Put a can of freon in and it still does it... Please help?


Hi,

Check the condenser fan if it is running when u turn on ur A/C system.
If not that will be the problem to solve, check the fan fuse and the motor itself!

Look at ur a/c compressor also, if the clutch engages when u turn on the switch!

Tell us more afterwards!

May 11, 2011 | 2000 Jeep Grand Cherokee

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Grand jeep cherokee laredo A/C only blowing hot air. Checked refrigerant and it is okay. Any other ideas?


Make sure the compressor is engaged an running,and the dryer is cold,if so,then the temp door actuator motor is not working,it is in the dash mounted on the blower box,the dash will have to be pulled out toward the seats to replace the actuator motor

May 10, 2010 | 2000 Jeep Grand Cherokee

1 Answer

My 2002 Expedition air conditioner will sometimes blow hot air and others cold air


I would check the following possibilities:
1. Is compressor clutch working? - You need to do this when the ac is blowing hot air only - locate compressor drive pulley on engine - rubber belt wraps around it. Start engine and set to max ac. When the ac is blowing hot air, look at the center of the compressor drive pulley using a good flash light - watch it for a while, it should be spinning with the pulley - this means the compressor is engaged. If not, the compressor is not engaged. If your ac is blowing hot air, then the compressor should be engaged and running (trying to cool). If it is not engaged, then your compressor clutch is probably going out. Could be low voltage to clutch, but more likely the clutch is worn out and only working some of the time. Note: if working normally, the compressor clutch will engage and disengage in cycles- but the air should always be cold. If clutch is bad, compressor would need to be replaced (sold as one unit). This is tricky to diagnose and could take some time - you need to do it when ac is blowing hot air but set to max cooling.

2. Low on refrigerant or refrigerant has moisture in it? If your ac blows cold initially after being off for a while, then heats up, and continues to regularly cycle back and forth between hot and cool air, then the system may be low on refrigerant or the refrigerant may have moisture in it that is freezing and restricting refrigerant flow. An a/c shop can check refrigerant level and even replace refrigerant if moisture is suspected.

Could be other issues, but I would start with these.

Good luck

May 07, 2010 | 1999 Ford Expedition

1 Answer

2004 Jeep Grand Cherokee Laredo V8 air conditioner blows hot air. We can hear the the fan turning on. I am planning to replace the a/c system but what parts do I actually need?


FIRST CHECK TO SEE THAT THERE IS FREON IN SYSTEM OR COMPRESSOR WILL NOT ENGAGE MAY JUST NEED FREON WITH OIL IN IT.( WHEN YOU TURN ON A/C DOES CENTER PART OF COMPRESSOR START TO TURN)?

Apr 03, 2010 | 2004 Jeep Grand Cherokee

1 Answer

Power to a/c unit


if theres power to all the sensors and to the compressor and it has been re-gased with the correct amount of gas then provide a 12v suply to the compressor to see if the clutch works if this fails the coil in the compressor is proberly faulty

Jun 22, 2009 | 1997 Jeep Grand Cherokee

1 Answer

97 Jeep Grand Cherokee A/C compressor clutch will not engage.


the fuse for ac is under the hood. the lid usually when you flip them open on that tell you what is what. if fuse is good you may have just lost enough freon to keep compressor from kicking in.

Jun 20, 2009 | 1997 Jeep Grand Cherokee

1 Answer

2000 Jeep Grand Cherokee Ltd 4.0L A/C problems


this is most likely a a lack of r-134a (as freon is no longer used), if your system is completely out or close to it then the pressure sensor will not allow the compressor clutch to engage, it is also possible that there is an electrical issue but less likely. to know for sure you need to put some gauges on the system

Mar 21, 2009 | 2000 Jeep Grand Cherokee

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