Ok, I own a 1995 Integra GSR. I will be driving down the road at a constant speed, lets say 3000 rpm, running like a champ, then out of the blue, the tach needle will Jump around like crazy up to 4000 ish and down to 2500 ish really fast. Some times the car will die and other times the bouncing will stop. It happens at any rpm, most of the time while crusing but sometimes it happens while stopped at a light.

I have a VAFC installed and when the tach bounces around on the car's guage, the VAFC reads a constant RPM reading where the engine running at. I get a CEL 14 which is idle air control valve. I thought that it was ignition related so I replaced the cap and rotor, spark plugs, sparkplug wires, Distributer, and ignition coil. The problem still exits... I swapped The idle air control valve and the map sensor from another car which runs great and it still happens. The ignition timing is set up perfect.

Could my problem be related to the ECM? Please Help Me, This is driving me crazy, I am pulling out my hair trying to figure out the problem.