Pulsing Idle Disappears when Idle Air Control Valve is Disconnected

David Jerome · 04-16-2008, 10:45 PM

A lot of cars with a PFC that I have had idle much better with the ISC un hooked. Im sure if you get Chuck Westbrooks notes you can find something about that in them but I havent bothered to get that in depth. However, usually with the ISC un hooked the car does take a little longer to settle on idle once letting off throttle, nothing major but noticeable.

2knob · 04-16-2008, 11:12 PM

I'll probably swap in the stock computer and see what happens, but I don't believe it sould be related to the PFC as it had been running fine up to that point, even when I bought it (in terrible shape).

04-16-2008, 10:45 PM	#1
David Jerome RCC Contributor Join Date: Jan 2008 Posts: 713 Rep Power: 18	A lot of cars with a PFC that I have had idle much better with the ISC un hooked. Im sure if you get Chuck Westbrooks notes you can find something about that in them but I havent bothered to get that in depth. However, usually with the ISC un hooked the car does take a little longer to settle on idle once letting off throttle, nothing major but noticeable. __________________ David Jerome Broker for Speed For Sale LLC (David@SpeedForSale.com) (Pre-owned RX7/sports car sales & new parts sales/installs/tuning) PM me about low priced, high quality port work

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04-16-2008, 11:12 PM	#2
2knob The Newbie Join Date: Feb 2008 Location: Bay Area, CA Posts: 18 Rep Power: 0	I'll probably swap in the stock computer and see what happens, but I don't believe it sould be related to the PFC as it had been running fine up to that point, even when I bought it (in terrible shape).