C5 acting strange
I have a 2002 Z06 that has developed an issue that seems like a miss, but the car throws no codes other than a P0128 which to my knowledge has to do with coolant temp. I have replaced the plugs and double checked the wires to make sure they are all clicked into place. The car idles fine, but when I go to leave when the car is cold in morning it has a hard time, the rpms try to drop and I have to play with the throttle to bring the rpms back up when trying to get the car to actually move in gear. Its almost like an on off switch, you can get the car going and youll feel it stumble and then pick back up under light accelation. It also has this miss type feeling at cruising speed, but under wide open acceleration it seems to run great. Im just a little stumped because it is throwing no codes, and I hate to just start throwing money at it blind. I've been thinking the o2s could be giving me issues, but Im wanting input from you guys on which direction to go. Car runs great at wide open, but gives me issues at first start in the morning, and then at cruising speed and light acceleration. Any help is much appreciated. This issue has been going on since before the plug swap.