OK 1994 TRANS AM STOCK LT1 MOTOR FLOWMASTER EXHAUST NO CAT , K&N FILTER NEW OPTI SPARK, FUEL PUMP AND REGULATOR CARRYING CORRECT FUEL PRESSURE , PLUGS AND WIRES , TPS SENSOR, EGR VALVE AND SOLENOID , NEW MAP SENSOR, OXYGEN SENSORS ARE OK TIMNG ADVANCE IS OK THIS THING HAS NO POWER FROM IDLE TO 2000RPMS AFTER THAT IT IS FINE UNTIL IT REACHES 5500RPM AND THEN STARTS TO MISS A LITTLE THIS IS DRIVEING ME NUTS ALSO HAS NEW GM FUEL INJECTORS. i BELIEVE THIS CAR SHOULD ROAST OFF THE TIRES OFF FROM A STAND STILL ANY HELP WPOULD GREATLY BE APPRECIATED.

 

The caps are killing me.

 

So when you nail the gas from an idle...what happens?

Are you sure your plug wires, and especially your coil wire, and coil are good? Have you checked for arching in the dark with your hood open? Have you tried sparying your coil down with a squirt bottle of water to make sure that it is well insulated?

 

As for the problem, good luck major lt1 flaw

 

Bump for a similar problem

 

Is the throttle body clean? I've encountered LT1 hesitations off idle if the TB is dirty around the area of the Idle Air Solonoid. Make sure the IAS passages are clean, as well as the pintle of the IAS itself.

 

Hey thanks for the info this is about the only thing I havent checked yet and thanks for not telling me its the opti i think thats is everyone quick fix