Closed Loop and Idle tuning 90mm
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From: Port Tobacco, MD
Closed Loop and Idle tuning 90mm I'm working on a 00 Camaro and for some reason the car won't go into closed loop, what besides the closed loop enable temp will keep the car from going into closed loop? Anyone have some pointers on nailing down the idle on a 90/90mm big cam F-body?
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From: Port Tobacco, MD
Originally Posted by HumpinSS
if you have any fault codes for the o2 sensors it wont go into closed loop. what codes are you throwing or what codes are pending
Phil
Originally Posted by Phil99vette
That may have been it. We pulled one of the O2s to tune it and we probably never reset the code. Cartek did the orginal tune and we're still finding things that are "out of the normal".
Phil
Phil
LOL I know what you mean!!!!
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From: NJ
Originally Posted by Phil99vette
I'm working on a 00 Camaro and for some reason the car won't go into closed loop, what besides the closed loop enable temp will keep the car from going into closed loop? Anyone have some pointers on nailing down the idle on a 90/90mm big cam F-body?
If it's indeed one of our tunes, it was done with LS1 edit a long time ago, since edit at that time didn't have all the tables to enable true "open loop" the O2 signal wires had to be cut so the PCM would not learn on some vehicles. Just reconnect the wires if you have to, one on each side a couple of inches above the front O2 connector. There was no HPT or EFI live back then.
We have been using HPT and EFI live for a couple of years now and with access to all the tables that we need to access there is no need to do that any longer, all we do is disable it in the software in order to run open loop with big cams, etc.
HTH, Julio
