I have the problem of the engine stalling when it is cold out i have replaced every sensor blah blah blah and also the cap wires and rotor. Well i was outside today and decided to start it up. before i started it up i inserted a popicle stick in the throttle stop and start it. This proving the IAC is good. Well anyways it didn't stall but i had quite a miss in the motor. what is causing me to lose spark only when cold i testes all the plugs and wires well actually on my 3rd set of plugs i just some standard autolite in there. I had replaced the TFI and the PIP I used napa parts but i'm starting to question the PIP or the TFI but im not sure. Well at least now i know i got intermittent spark when it is cold out but WHY???