again.. 90 Iroc LB9/auto. stock. It seems to be working fairly well now as i get more miles and run time behind it. Looking at scantool,car is at operating temp, when throttle is held at very light application say 1%-5% it likes to stumble and/or die out fairly often. If you have the throttle anyhting over 6% its mostly fine, no bog or stumbles. Dies moreso when you come to a complete stop, idle then attempt to move slow again, all other areas above 6% throttle are okay. TPS is smooth action, i can read every .02v from .58 - 4.20v IAC was set previously, car idles smooth at 625-650 in gear. adjsuted timing 10 deg btdc, up from 4 deg. any suggestions?

thanks,
Nick

 

Vader - its my last major headache i swear!! I'll even buy you lunch when i get back down there!