It has to relearn "minimum throttle" before it will know when to be in control of idle speed. Until that happens you have to hold the gas pedal down 1/4" for it to start and stay running, especially when you pull up to a stop sign. You also won't get the nice "idle flare-up" until that relearn takes place. To meet the conditions needed for the relearn to take place, drive at highway speed with the engine warmed up, then coast for at least seven seconds without touching the pedals.
Why did you replace the computer? They cause very little trouble.
Saturday, October 13th, 2012 AT 2:57 AM