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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

Green Binary switch pin out
11/17/2018 in the HVAC Forum
2001 Sterling Acterra 8500 MEI Part No.: 1324 Freightliner: 06-35209-000 FORD: 06-35209-000 M.P.: 325-270 PSI (Fan) H.P.: 465-235 PSI (Compressor) Good day all, I posted before on this unit and my plans to restore the AC system. System is charged and oil ...
evaporator removal
11/09/2018 in the HVAC Forum
[HVAC: 07 Toyota FJ Cruiser 4.0L] Hello, I need to replace the evaporator core and have never done one on an FJ. The si indicates allot of removal steps, do I really have to take this thing apart piece by everluvin piece? Or can the dash and crossbar com...
Temp Actuator Code B0423
10/25/2018 in the HVAC Forum
[HVAC: 12 Chevrolet Captiva Sport LS 2.4L] This vehicle sets a B0423 temp control 2 feedback circuit short to battery or open. Code is set in history, haven't been able to get it to act up. The HVAC module software is current (there have been 7 updates r...
HVAC relearn
10/24/2018 in the HVAC Forum
[HVAC: 12 Dodge Grand Caravan SE 3.6L] What is the relearn procedure for the hvac controls on a 2012 Grand Caravan se ? The rear defrost light flashes with no response until about a minute then the Hvac works perfect .Thank you.
A/C Condenser
10/23/2018 in the HVAC Forum
[HVAC: 98 Chevrolet P30 7.4L] This is a Winnebago Vectra motorhome, owner guide actually calls it a P12. Previous owner needed a condenser, none available anywhere, so they took the old one out and capped the lines. Now the current owner would like it re...

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