2001 Ram 1500 5.9 4x4 Sport A/C Not working
see if i can identify where the leak is.
Retired Moderator - RIP
Joined: May 2008
Posts: 18,729
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From: NH
It's more than common for the leak to be at the evap core on these rigs. Dye will not help, because the core is inside the HVAC box. (can't see the dye). The AC shop will have equipment that can detect a leak inside the box.
Veteran
Joined: Oct 2010
Posts: 401
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From: Arizona
check and see if your horn works,oddly enough, my ac wasnt kicken on, evacuated,recharged,still nothing, jumped the low switch nothing, then found my horn fuse was blown and replaced it and ac kicked on, found the short on my lower horn,disconnected and has worked perfect since...
Registered User
Joined: Aug 2012
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Right on I'll look into the horn fuse and if that doesn't help I'll just have to take it into a shop being as I do not yet have my own AC equipment. This is the hazard of living in AZ heater goes out when it's in the 20s in the winter and the AC goes out as soon as you hit triple digits!
Legend
Joined: Jul 2011
Posts: 8,259
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From: Austin, TX
Yep, find the low pressure switch connector, usually the only electrical connector readily visible on the refrigerant lines. Disconnect the connector, start the truck, turn the AC on and then take a wire or paper clip and short the two female ends of the connector. If the compressor is good, this will engage the clutch and turn the inner portion of the compressor pulley (the actual compressor). If it engages the clutch, you probably don't have not enough R134 in it (normally takes around 2 lbs, read the label under the hood, it will tell you how much).
Also, ohm the AS clutch coil and see if it is shorted or open.