[racerg35335]

Hello all. Thanks in advance for any responses that may help me diagnose my problem. My car is a 2007 e92 335i with 47k miles. Original plugs as I have recently purchased the car

Just before I was flying out of town last week my car picked up what I am assuming is a misfire (and the service engine light came on). I have not been home in order to have diagnostics run on it nor do I want to spend the money on a BT tool b/c I plan to pick up a JB4 soon. Currently my only mod is a jb+ only intsalled a few weeks ago.

I went WOT at about 3k and just as boost was building the car picked up a misfire. Almost a vibration. It continued to do this under normal driving and the CEL came on. I turned the car off and restarted with the same problem. Basically, it feels like I am on 5 cylinders. I went ahead and ordered plugs and a coilpack that should be on my doorstep when I get home. I am just hoping it is not an injector or worse. Has anyone experienced the same problem? Would a plug or coilpack go out all at once like that? I have had bad coilpacks on other vehicles and it felt like they would go on and off before they went bad completely. I am on vacation and just wanted to get an idea of what i will be dealing with when i get home. thanks again.

[Cisco661]

Sounds likely the culprit is a bad ignition coil but I've heard few on here have issues after installing a JB. Good luck with the fix.

[shata]

Originally Posted by racerg35335

Hello all. Thanks in advance for any responses that may help me diagnose my problem. My car is a 2007 e92 335i with 47k miles. Original plugs as I have recently purchased the car

Just before I was flying out of town last week my car picked up what I am assuming is a misfire (and the service engine light came on). I have not been home in order to have diagnostics run on it nor do I want to spend the money on a BT tool b/c I plan to pick up a JB4 soon. Currently my only mod is a jb+ only intsalled a few weeks ago.

I went WOT at about 3k and just as boost was building the car picked up a misfire. Almost a vibration. It continued to do this under normal driving and the CEL came on. I turned the car off and restarted with the same problem. Basically, it feels like I am on 5 cylinders. I went ahead and ordered plugs and a coilpack that should be on my doorstep when I get home. I am just hoping it is not an injector or worse. Has anyone experienced the same problem? Would a plug or coilpack go out all at once like that? I have had bad coilpacks on other vehicles and it felt like they would go on and off before they went bad completely. I am on vacation and just wanted to get an idea of what i will be dealing with when i get home. thanks again.

When you read the code out...Check cylinder that has misfire and move that coil to next cylinder and start it back up just to make sure the misfire moves to that one and you will know its the coil. Idk what they run for your 335 but I got mine from bapgeon locally for my 330i for 24$ (bosch).

[W.WCherry]

I had a misfire code on my car about 8 months ago. As soon as I would get above 3000rpm, the car would go into limp mode and throw the misfire code. In my case, it was a bad injector.

If you aren't going into limp mode, you might get lucky and it could just be the spark plug/ coilpack.

[racerg35335]

It never went into limp mode so I hope you are correct. This car is getting awfully expensive quickly. I am starting to miss my G35. I will be home on Tuesday and will hopefully know on Wednesday.

[BMW_Belgier]

Originally Posted by B.Corso

I had a misfire code on my car about 8 months ago. As soon as I would get above 3000rpm, the car would go into limp mode and throw the misfire code. In my case, it was a bad injector.

If you aren't going into limp mode, you might get lucky and it could just be the spark plug/ coilpack.

+1

This would be the probable cause...

Keep us posted and good luck!