jdmracer12

ok heres my problem. I have a d16y8 swapped into a 97 civic running obd 1. z6 intake thats been ported to an ls throttle body. stock motor, full exhaust and short ram intake. i didnt have this problem until i swapped this motor in but once the car is warmed up the engine stumbles on acceleration. this happens whether there is a load on the motor or not.
if the engine is at idle and i crack the throttle, it stumbles between idle and about 2000 rpms. after that its fine. it does it worse when the engine is under a load. ive put on a new throttle body gasket, new intake mani gasket made sure I have no vacuum leaks. the problem went away for a while then it came back and Im just stumped. any help is welcomed.

JDavidMunoz

I have the same problem right now. From what I've read, it could be the TPS, spark plug wires or dizzy cap/rotor.

Simkin314

TPS

Throttle position sensor, TPS (side of throttle body)
function: allows the ecu intimate knowledge of the current angle at which the throttle plate is situated. This allows the ecu to compensate for many things including idle conditions, ecu tables (ignition and fuel), etc.
Recommendation: Test the center wire (make/model dependent) with your engine off, key in the ON position. This value should be 0.5 volts closed throttle and 4.5 volts wide open throttle.