My dads son changed the motor in a 1998 durango, after everything was done the ac compressor stays engaged with key both on and off. when the ground thats located behind alt is disconected the ac clutch disengages but doesnt engage when the ac inside the truck is on. im lost, checked all wires, everythings pluged in and hooked up.
The only thing it could be is the conrtol wire of the A/C compressor clutch relay is shorted to one of the wires grounding at the alternator . The PCM - engine computer controls the grounding for the A/C compressor clutch relay. Find the A/C compressor clutch relay in the under hood fuse box , pull the relay out of the fuse box an look on the bottom . You will see four sets of numbers . 30 & 87 plus 85 & 86 . Take an ohm meter an check pin 85 to ground with the ground wire's behide the alternator connected , you will have continuity . Disconnect the ground behind the alternator an you will probably have a open circuit . When the motor was changed wire's were pinched or something . Most likely . Here , check out the wiring diagram http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model an engine size . Under system click on HVAC , then under subsystem click on HVAC controls . Click the search button ,then the blue link . Fourth diagram down is for the A/C compressor clutch relay circuit. Don't know if know how a computer controlled relay circuit work's . Looking at the diagram .The DB/OR - dark blue with orange trace wire would have to be shorted to one of those ground wire's for the compressor clutch to stay engaged .
SOURCE: 99 Dodge Durango Dies When Slowing
Here is the most common cause of surges and stalls and low idle rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
SOURCE: air conditioning clutch
I have the same problem with my Durango AC. I called the dealer and they do have clutch for my compressor available. I wonder how big of a job it can be. I got my A/C Charged thinking I am low on compressor gas only to find out after 135 dollars that it is my clutch that is not engaging. Cost of new compressor and labor factor added to it get to be a scary sum of money for 1998 model. Any one knows how to replace this clutch? Is it the front bold that is holding the entire clutch? Help amin
SOURCE: no reverse 2001 ram 1500 4x4 5.9
I think the tcm transmission control module is loosing signal, The problem is most likely in the pcm or tcm. I would replace those parts next.
SOURCE: BAD BEARINGS ON AC CLUTCH ON A 2000 DODGE DURANGO
Buy a whole new clutch for about $200. You need a special puller to remove the old one if you intend to refurbish it. It's not worth the effort. Just remove the clips and knock the old one off with a hammer. Chuck it away and replace with a brand new clutch assembly.
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