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Automotive HVAC Forum

Professional automotive forum for discussion of heating, ventilation, and air conditioning maintenance and repairs. Includes discussion of refrigerants, refrigeration lubricants, system analysis and diagnostics, filtration, HVAC-specific tools & equipment, best practices, and more. This forum is for experienced automotive repair professionals only, membership required.

Continue to the description of our next automotive discussion forum, the Technical Discussion Forum.

Recent Automotive Discussions in the Automotive HVAC Forum

New compressor
07/18/2018 in the HVAC Forum
Hello all. Question: How many times can ya ask me how much a new compressor will cost on your car before the answer is zero? Answer: I'll explain it about 3 times before I turn into an absolute ahole. Thanks for reading my rant! That is all.
Deere 700J Dozer
07/17/2018 in the HVAC Forum
We need to replace the expansion valve & drier on this JD dozer. I would like to know about where they are located,and a repair procedure. Has anyone done any of these? I will have to do this in someone's barn and not in out shop. Thanks!
R134-A leak detection
07/16/2018 in the HVAC Forum
How are people locating evaporator leaks without disassembling heater boxes? I'm currently using an Infinicon Tek-Mate and it seems to work pretty well. That being said between that tool and dye in the A/C system I'm having a very difficult time pinpointi...
1990 Chevy C2500
07/13/2018 in the HVAC Forum
[HVAC: 90 Chevrolet C2500 Silverado 5.7L] Sunday I have to go to a friends shop to help with this vehicle. He replaced the condenser on this truck & charged the system. He called me & stated the high side went to 400 & the compressor was extremely noisy ...
High and Low side pressure over norm
07/13/2018 in the HVAC Forum
Hello, The AC was only cooling while driving but not when idle (06_Dodge Ram1500). I put the gages to it and discovered that both high and low sides were well over specs. The compressor clutch is spinning but keeps stopping as when it is low on freon yet ...

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