DcMaN

iTrader: (13)

well ever since i did the de-k motor swap ive had a huge misfire at idle and while driving. I still have no codes coming up on the misfire. The motor becomes very jerky while driving, also at idle i can see the motor is VERY jumpy i can notice its misfiring immediatly. I dont think its a coil ive unplugged each coil one by one to see which one doesnt affect the idle but they all seemed to have a dramatic affect on the motor so i think i can eliminate that. So i guess the only thing that could be left is a clogged injector, or possibly bad plugs ? If anyone has some ideas id appreciate it.

MDeezy

iTrader: (27)

check you TPS sensor. My car had a bad idle that would fluctuate up and down, with out even putting a multi meter up to the TPS, I just losen the bolts and turned it, and I could hear the Idle smoothening out.

But test your TPS before adjusting it, its not the funnest thing to be under the hood adjusing mm by mm.

have you tested each coil to see if any have gone bad?
Put a screw driver on each injector and put your ear on the other end, listen to see if you hear the ticking sounds of the injector firing.

DcMaN

iTrader: (13)

i will definatly check the coils with the multimeter. I've also noticed that my car does not like to stay rnuning in the cold. It starts, turns over, and then just stalls it doesnt like to stay running, i have to give it gas a few times and then it works perfectly throughout the rest of the day. It usually only does this when the car sits over night its never done it during the middle of the day.