Searching for Idle in Open Loop
Thread Starter
Pro
Joined: Jan 2004
Posts: 503
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From: Forney Texas
Searching for Idle in Open Loop
I recently installed a SuperRam along with 30# injectors. I have a chip by pcmforless for the Edelbrock setup with 24# injectors the SuperRam replaced. I have put about 75 miles on the car since the install. What I have noticed is the car seems to be hunting for idle when in open loop. It surges from around 500 - 950 rpm. Once it has gone into closed loop, the problem disappears. I tried resetting the IAC but the instructions in the manual seemed a little odd. "Start car, run for 5 seconds, shut off for ten seconds, restart car".
I don't think at this point it is a vacuum leak as it idles fine in closed loop but I am open to opinions. I will be installing a supercharger shortly and I need to have everything up and running as it should before I start the final phase.
Thanks in advance for your input.
90Indy
I don't think at this point it is a vacuum leak as it idles fine in closed loop but I am open to opinions. I will be installing a supercharger shortly and I need to have everything up and running as it should before I start the final phase.
Thanks in advance for your input.
90Indy
Drifting
Joined: May 2003
Posts: 1,730
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From: Charlotte NC
St. Jude Donor '05
I usually set the IAC with a scan tool Do you have a datalogging cable? If so send me a datalog and I can send you some pointers. I can also look over and see if we can clean up the tune any.
Thread Starter
Pro
Joined: Jan 2004
Posts: 503
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From: Forney Texas
Originally Posted by Alvin
I usually set the IAC with a scan tool Do you have a datalogging cable? If so send me a datalog and I can send you some pointers. I can also look over and see if we can clean up the tune any.
You burned the chip for my last setup and I fully intend to send you a datalog for this one. I will be sending you a file in a day or two if the skies don't open and dump on me. Hate to wash the car if I don't have too.
90Indy
