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clinebarger · 06-26-2016, 08:41 PM

I do have the 3 Relay set-up.

Now that I have a PCM with the correct Hardware, The Fans are functioning correctly with the Pressure Transducer.

I bumped the A/C off Idle table to the same RPM as the A/C on table, I have a Stall Converter so the higher RPM isn't really an issue.

If I'm understanding you correctly, A resistor will make the PCM read a fake fixed value to enable A/C Clutch Relay & Turn the High Speed Fans on anytime A/C is requested? But....Wouldn't that turn the Fans on even without the A/C request because the false refrigerant pressure signal?

My issue right now is.....My 2005 PCM will not accept a 12vdc A/C request.

06-26-2016, 08:41 PM	#38
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: Need some help with tuning. I do have the 3 Relay set-up. Now that I have a PCM with the correct Hardware, The Fans are functioning correctly with the Pressure Transducer. I bumped the A/C off Idle table to the same RPM as the A/C on table, I have a Stall Converter so the higher RPM isn't really an issue. If I'm understanding you correctly, A resistor will make the PCM read a fake fixed value to enable A/C Clutch Relay & Turn the High Speed Fans on anytime A/C is requested? But....Wouldn't that turn the Fans on even without the A/C request because the false refrigerant pressure signal? My issue right now is.....My 2005 PCM will not accept a 12vdc A/C request.