AC Operation with a Single Fan

[Skele4door]

I have a quick question about fan control on my project. I have a Taurus fan in my 2002 f-body LS1 swapped RX7 that I am currently only running on low speed since high speed hasn't been needed and I'm trying to limit the amount of wiring and relays all over the place.

I am about to plumb and finish wiring my AC and I have a question about fan control. As I understand it, the stock f-body PCM turns the high speed fan on whenever it receives an AC request signal. If this is correct is there a way to configure the PCM so that it turns on the low-speed fan instead of the high-speed one whenever it receives an AC request signal? Any help you guys can offer would be great. I barely get to drive it since cars with no AC in the middle of Texas summers are basically worthless

[Skele4door]

Bumpety, anyone have any idea?

[Russ K]

The Camaro cooling fans run in series for low speed & parallel for high speed. The PCM commands low speed fans once the A/C pressure exceeds 190 psi, and will command high speed fans above 275 psi. Just use fan relays 1 & 2 to apply 12V to the Taurus cooling fan for high & low speed operation.

Russ Kemp

[Skele4door]

Thank you very much Russ. That was exactly the information I was looking for.

[nick13618]

I've got an 04 gmc 3500, that i put electric fans on, and i was wondering if there is an output from the pcm that controls the fans, even though it came with a fan on the pullys?