Hello Everyone! Hopefully someone can help me out. My Z28 is experiencing a surging problem under light throttle pressure, around 1500-2500 rpm, any gear. The problem feels worse in the first 4 gears (have a 6 speed) because of the additional leverage that the engine has in those gears. I have replaced opti-spank twice already so I am guessing it can't be that. Also, it does not seem to happen until after the engine is warmed up (when the computer goes into closed loop). If drive the car immediately after starting it, I don't feel the problem. What sensors or other parts could be causing this? I even just threw on a new coil module and coil wire to see if that would do anything, but no luck.
Please help!!!! Thanks a million!! Steve- snipped-for-privacy@comcast.net