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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.

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Recent Automotive Discussions in the Automotive HVAC Forum

blower motor not working
08/18/2017 in the HVAC Forum
[HVAC: 78 Chevrolet Corvette 5.7L] I don't know if this is where I should post this but here goes. 1978 Chev Corvette The blower motor isn't working. Have electricity at the blower motor but not at the fuse box. It is a brown wire and has a fusible link ...
Automatic climate control maybe out of range
08/15/2017 in the HVAC Forum
[HVAC: 05 Acura MDX Touring 3.5L] This Acura cools very nicely (3 degrees C) if you select the coolest setting and manually set fan speed, but it seems that with the temp requested in the auto mode, it doesn't cool as very well- select 63 instead of 70, ...
Mode door 07 Silverado
08/15/2017 in the HVAC Forum
[HVAC: 07 Chevrolet Silverado 1500 Classic LS 5.3L] code B3770 truck originally was stuck on defrost replaces mode actuator motor and did the re-calibration. mode is now on vents only. when the calibration goes thru the process you can see the full sweep...
Small Cans
08/15/2017 in the HVAC Forum
They have arrived. Found this @ my local NAPA. [1234yf small can].
A/C LEAK ?
08/15/2017 in the HVAC Forum
[HVAC: 00 Lincoln Town Car 4.6L] A/C compressor manifold hose assembly and discharge hose leaking. Evacuate system and replace broken pieces. Begin to vacuum (high and low ports open) and about 5 minutes into it the compressor begins to vent ?, refrigera...

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