1996-2002 Dodge Ram 1500 AC Compressor Clutch Won't Engage Trouble Shooting

Do you feel a little hot? And it will only grow hot as summer is coming soon.It will be a perfect time for an ac failure,specially ac compressor clutch won't engage.

There are several things that can keep the compressor from engaging.
•The heater-A/C mode control switch
•The low pressure cycling clutch switch
•High pressure cut-off switch
•Compressor clutch relay
•Powertrain Control Module (PCM)

One of the most common problems is a low refrigerant charge, the low pressure switch prevents the AC clutch from engaging when the system is low on refrigerant.So Make sure you have enough refrigerant in the system first.It's also not a good thing if the refrigerant is added too much,because there may be noise if you fill up.You need to add 70-80% refrigerant.

But also some Dodge Ram 1500 owners reflected have tried jumping the wires on the accumulator and can move the clutch by hand but it will not engage even after putting moderate refrigerant in the system. For this case,what should we do ?


If you have enough refrigerant indeed there then get your hands on a multimeter and see if your getting power to the connector at the compressor with the key on and ac on max. If you have power at the connector then the clutch is more than likely bad. There is a diode in the clutch that sometimes fails and may cause some code like P0645.At this point,a new ac compressor clutch will solve your trouble.Hex auto provides high quality Dodge Ram AC Clutch Replacement as well as After market AC Compressor For 1996-2002 Dodge Ram 1500,you could find unbeatable price on Hexautoparts.com and enjoy free shipping service here.

More information about Automotive you can keep eyes on my blog, which aim to offer profession tutorials for most of people know automotive aftermarket. Also you can easily access a lot of information on car repair and maintenance here, fixing and repairing minor faults in vehicles is a norm.

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