Misfire when racing through the gears

[bigbrian442]

Re: Misfire when racing through the gears

That may be, and I'm not disagreeing with you. But from my experience with two faulty ICM's (on older, OBDI cars) The things misfired like crazy but no codes were set. But of course ours are much more advanced so my ICM theory may not apply.

The misfire detection was required for OBDII. If you have a scanner that can read the OBDII data you can see the self tests that are part of the OBDII platform. The PCM has several tests it performs continuously and several it runs once per ignition cycle. The Misfire is a continuous test.

[Rangersltw]

Re: Misfire when racing through the gears

I was unable to get a chance to do the relearn today, we were to busy at work and couldnt get done early. Will be doing it tomorrow morning, just keeping you all posted.

[Rangersltw]

Re: Misfire when racing through the gears

Problem solved. I did a CASE relearn today and everything straightened out. Thank you for all the insight.

[bwkmaro]

Re: Misfire when racing through the gears

u might have fouled a plug what kind of plugs u runningcause if ur running bocshes its a good possiblitly

[bwkmaro]

Re: Misfire when racing through the gears

oh and my coils when i cheaked them it said they were still good but i changed them out anyway and it fixed my missfire prob

[Rangersltw]

Re: Misfire when racing through the gears

Did you guys even read what I have been posting? I have brand new plugs, wires, coils and ICM. A CASE relearn fixed my problem.

When I replaced my A4 PCM with the M5 one that is when the car started to have the problem. I never did a CASE relearn because my friend said it doesnt make much of a difference, but I figured it had to be the prob since it didnt misfire when I was running the old PCM. Did a CASE relearn in 2min and the problem is gone. I just wanted to see what others had to say. But please read what has already been posted.

[Rangersltw]

Re: Misfire when racing through the gears

I am running NGK TR-55 plugs.