Question about idle
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From: Clermont, FL
Question about idle i noticed when doing a hot start after driving for a bit then shutting down the computer goes into what appears to be open loop mode for i dunno say 30 seconds after startup, making my injectors work harder, stft & ltft at 0, o2's super rich 800+ for those 30 seconds or so and the car kinda spudders obviously from sucking in all this fuel...what can i do to counteract this?
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From: Lake Zurich, IL
From my understanding every startup there's a period where the car stays in Open Loop regardless of engine coolant temp... I can access this table in my Grand Prix editor but don't see it in my LS1 editor (i'm prolly missing it... i'm a lil tired right now) .. but it is built into the PCM to maintain open loop for a period of time on startup prior to going to closed loop (just as there's a table that maps the ECT to IAT for closed loop enable)
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From: Clermont, FL
hmmm just weird cuz as soon as it comes out of open loop the idle smoothes out and everything is fine but for that first minute it wants to just surge & surge...im trying to keep everything i have setup for closed loop the same because of the fact that its street manners are very good once its out of open loop. Aight back to the drawing board i guess.
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From: Clermont, FL
Originally Posted by HumpinSS
you can go into the open loop f/a table and correct that if i am not mistaken
