AC Idle on PowerFC - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

spirit · 01-15-2008, 11:51 AM

I just can't get it to up the idle for the AC. When the AC is on none of the idle values on the hand controller change the car's idle. When the A/C is off, the idle changes in real time with the hand controller. Tried resetting it many times and do the 10min wait thing (man talk about a wait).

Anyone have any ideas? Here are some images from the sensors:

AC OFF:

AC ON:

IDLE SETTINGS:

Really the low idle doesn't bother me too much, but its the dip coming off power, feels/sounds like the eng wants to stall.

Firestorm · 01-15-2008, 12:03 PM

sorry for OT, but what software do you use?

spirit · 01-15-2008, 12:06 PM

Thats FC-Edit (datalogit software) on windows vista.

drift freaq · 01-15-2008, 12:13 PM

that sounds like wiring problem. I know for a fact I could change my AC idle with my hand controller while my engine was running or not. Is your save function working correctly? If your ECCS relays are not wired to constant power to give the computer 30 secs of power after you turn off your ignition key the computer will not save your changed settings. The above is a common bug(for people running PowerFC's) in SR swap wiring, that people do not know about unless they run a PowerFC.

spirit · 01-15-2008, 12:28 PM

Power off wiring seems fine. Won't run on 'default' settings because of MAF and injectors upgrade. Not sure on AC wiring, but AC & ACR is detected by the powerfc. Not sure what ACR is, but could be assumed as AC Relay? Also not sure if both should be checked at same time.

01-15-2008, 11:51 AM	#1
spirit Zilvia Member Join Date: Dec 2005 Location: california Posts: 272 Trader Rating: (3) Feedback Score: 3 reviews	AC Idle on PowerFC I just can't get it to up the idle for the AC. When the AC is on none of the idle values on the hand controller change the car's idle. When the A/C is off, the idle changes in real time with the hand controller. Tried resetting it many times and do the 10min wait thing (man talk about a wait). Anyone have any ideas? Here are some images from the sensors: AC OFF: AC ON: IDLE SETTINGS: Really the low idle doesn't bother me too much, but its the dip coming off power, feels/sounds like the eng wants to stall.

01-15-2008, 12:13 PM	#4
drift freaq R.I.P. Aya, always love Join Date: Nov 2001 Location: Los Feliz/Hollywood Posts: 18,564 Trader Rating: (215) Rides Gallery: drift freaq Feedback Score: 215 reviews	that sounds like wiring problem. I know for a fact I could change my AC idle with my hand controller while my engine was running or not. Is your save function working correctly? If your ECCS relays are not wired to constant power to give the computer 30 secs of power after you turn off your ignition key the computer will not save your changed settings. The above is a common bug(for people running PowerFC's) in SR swap wiring, that people do not know about unless they run a PowerFC. __________________ "Having a lot of tracks on a song is like putting stickers on a car to get more horsepower" New Video https://www.youtube.com/watch?v=uebV1OnbRsw Buy my mounts! http://zilvia.net/f/sale-items/51531...ns-mounts.html http://zilvia.net/f/tech-talk/317539...e-mouts-6.html

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01-15-2008, 12:03 PM	#2
Firestorm Zilvia Junkie Join Date: Sep 2007 Location: Germany Age: 38 Posts: 371 Trader Rating: (0) Feedback Score: 0 reviews	sorry for OT, but what software do you use?

01-15-2008, 12:06 PM	#3
spirit Zilvia Member Join Date: Dec 2005 Location: california Posts: 272 Trader Rating: (3) Feedback Score: 3 reviews	Thats FC-Edit (datalogit software) on windows vista.

01-15-2008, 12:28 PM	#5
spirit Zilvia Member Join Date: Dec 2005 Location: california Posts: 272 Trader Rating: (3) Feedback Score: 3 reviews	Power off wiring seems fine. Won't run on 'default' settings because of MAF and injectors upgrade. Not sure on AC wiring, but AC & ACR is detected by the powerfc. Not sure what ACR is, but could be assumed as AC Relay? Also not sure if both should be checked at same time.