Okay, my 94 Z28 has the same hesitation problem when it gets warmed up how at stop signs with foot on the brake the cars rpms go up to 1500 and back down, almost as if the car is coming to life, also I will push the gas in whatever gear and it will bog then go then bog then Wammm full throttle.

Now I know some of you have figured out ways to fix it, will you post how you fixed ur Z28 Hesitation here Please, I really want mine fixed. I did all new spark plugs and coil, with no luck. Im trying a new IAT sensor Tues.

Thanks Guys

 

Do a search , This topic has been discussed dozens of times. Seems everyone has had differnt fixes to the same problem

 

sounds like the optispark.

 

Replace with an LS1.