A/C isn't cooling at while the engine is idling in a 2003 Dodge Ram 2500 with...

Nomadd

New member
It sounds like a worn out compressor. You should really find a better mechanic. You don't need a specialist. Just someone who knows how to hook up a pair of AC gages and read them. They could tell you in two seconds if the compressor is doing it's job.
 
It sounds like a worn out compressor. You should really find a better mechanic. You don't need a specialist. Just someone who knows how to hook up a pair of AC gages and read them. They could tell you in two seconds if the compressor is doing it's job.
 
...5.7Liter Hemi? As mentioned in the initial question, the truck's A/C system isn't cooling while the truck is idling. At highway speeds, everything appears to be fine. Problem started suddenly a week ago.

I took the truck in for a routine oil change and asked the guys to check on the A/C. I was thinking it might have been a low charge due to a leak. The mechanic said he thought it was probably the compressor ($450) but the shop manager (knows me and knows I'm close friends with the shop owner) wasn't 100% positive his mechanic's diagnosis and wanted me to take it to a specialist. In the meantime, they noticed a leaking water pump and replaced it while they had the truck.

All seemed fine until two days ago. The truck idled for a couple minutes while I was stuck in traffic. Right about the time I got moving again, I heard what sounded like a belt slipping badly underneath the hood. I immediately shut off the the AC and the sound stopped simulaneously. So now I suspect it is indeed the compressor. I've got the mechanical ability to swap the part myself but I'm looking for confirmation that my theory is viable.
 
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