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Old 05-27-2013, 06:02 PM
Nshyster Nshyster is offline
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Default Little Help with AC and Cooling Fan Control Strategy

I have been reading the various threads here for quite some time and the information from all you folks has been immensely helpful. Now for my problem. I am installing a GMPP LS3 crate engine with a new Vintage Air Gen IV in my 69 Camaro. The engine controller is an E67 ECM. From what I understand I cannot use the E67 ECM to control the AC compressor and fans together so I need another strategy. So I am planning to use the VA trinary switch to turn the fans on but I do not want the fans running full blast all the time. My thought is to do a series/parallel fan setup. The following diagram shows my idea. Not sure what to do about idle bump at compressor start or how to shut it off at WOT yet. But to protect the compressor I am thinking I can put in a rpm window switch to shut the compressor off at a set rpm. To shut the compressor down at WOT is there a signal from the electronic throttle pedal I can tie into? Apprciate any thoughts and comments. What do you guys think?
Thanks for your help.
Bruce L
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