Depinned engine harness --- now ... ?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ls1nova71 · 03-13-2019, 08:45 PM

I wouldn't have the fan run the whole time the A/C is on, that will just prematurely wear your fan out. The way e015475 said he wired his is the way I do it too. Run the VA as stand alone, and the trinary switch will control the compressor and also provide a ground to the fan relay to turn the fan on based on head pressure, that way it shuts off on the highway. You will want to let your tuner know though so he can disable the error reporting for the fan code because it may set a code when the PCM sees the relay grounded but didnt command it.

03-13-2019, 08:45 PM	#8
ls1nova71 Registered User Join Date: Dec 2009 Location: Independence Mo Posts: 4,119	Re: Depinned engine harness --- now ... ?? I wouldn't have the fan run the whole time the A/C is on, that will just prematurely wear your fan out. The way e015475 said he wired his is the way I do it too. Run the VA as stand alone, and the trinary switch will control the compressor and also provide a ground to the fan relay to turn the fan on based on head pressure, that way it shuts off on the highway. You will want to let your tuner know though so he can disable the error reporting for the fan code because it may set a code when the PCM sees the relay grounded but didnt command it. __________________ My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html



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