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Silent Z · 09-13-2005, 05:44 PM

This is my first post so here it goes. My 1994 Z28 has 82,000 miles on it and I have had it for 1 month. Once in a while the car will hesitate at 55 mph @ temp.200, 1500 RPMs. If I floor the car it goes away as if its at a bad spot on the throtle position sensor. But then it will do this at any speed. If I put it in nuetral and rev the engine it feels fine. The next day it wil drive perfectly. I am by no means an electrical guru, but I hooked up the shop Tech II. The SES light is not on but it has a code 0018 for injector unsual voltage. I am an impulsive person so I just bought a map sensor and a tps for the car and will install them in the morning. I hear so much about Opti Spark, but I dont know where to start and I have never learned how to check injectors. Any help would be great!

09-13-2005, 05:44 PM	#1
Silent Z Join Date: Sep 2005 Location: Charlotte, NC Posts: 119 iTrader: (0)	Driveability problems! Help! This is my first post so here it goes. My 1994 Z28 has 82,000 miles on it and I have had it for 1 month. Once in a while the car will hesitate at 55 mph @ temp.200, 1500 RPMs. If I floor the car it goes away as if its at a bad spot on the throtle position sensor. But then it will do this at any speed. If I put it in nuetral and rev the engine it feels fine. The next day it wil drive perfectly. I am by no means an electrical guru, but I hooked up the shop Tech II. The SES light is not on but it has a code 0018 for injector unsual voltage. I am an impulsive person so I just bought a map sensor and a tps for the car and will install them in the morning. I hear so much about Opti Spark, but I dont know where to start and I have never learned how to check injectors. Any help would be great! __________________ 1994 Z-28, A4, T-Tops, Trick Flow/Lingenfelter CAI, Air Foil, Underdrive pullies, FlowMaster Cat back, LT4 Knock Module, MSD 8.5 wires, Cap & rotor, 6A box, Hyper-Tech 160 T-Stat, T/B bypass, Optima Red Top Batt. , And Meziere electric water pump!