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I put a cc503 and the supporting valvetrain in my 95 camaro lt1 a few weeks ago and I'm playing with the tune. I have my idle set at 800 in drive and parking. iac counts are a solid 30-40 in idle at park. however when i put the car in reverse or drive it bogs down to 400-600 rpms and the iac counts jump to 90. any idea what's happening?
Converter?
Still running the stock tc. I tried tuning the closed tps spark table but no luck. i logged the idle with scan9495 and see that the battery voltage drops right when i switch into reverse or gear for a second then goes back up. i got a new alternator as well and no change. Tps is at 0.63V idle and map is pulling about 50kpa.
can you post your bin and maybe take a log with eehack and post that too? if the idle target is actually 800 and your real idle is 400, the IAC should be maxed (160). it should increase IAC until the target is attained.
Sorry for the late reply. As I was installing the suspension kit for the car. I have attached the current tune that I got from your online tuning software as a base tune. I have tweaked the closed tps advance a bit and the blm cell boundaries. I have also attached a 5 min drive that I logged with eehack (you have to change the extension from pdf to eehack, as it wouldn't let me attach eehack files) . At #5948 @ 623.0 you can see that once I put the car in reverse, the idle drops to 438 rpm even though the idle is set to 800 rpms. I also installed new ac delco 9718G plug wires as I found 1 wire that was burnt. Car has a new fuel pressure regulator as well and have cleaned all the injectors. The o2 sensors do fluctuate from 0-900mv but I have a feeling they might be a tad lazy. The car is running pig rich and blms are in the low 110s. im out of ideas on what the problem is. thanks in advance