[OnlyGerman]

Originally Posted by burro_blasta

Just bc it was such a recent change before you got the error, immediately makes it suspect in my mind. I got those kinds of misfire codes at the same time I was dealing with a low boost issue, never understood if it was pure coincidence or if a leak could cause something weird to happen with misfires.

Wish I could help more! I think the next thing in line would be injectors but that's more of a pain. I would've hoped you saw something obvious when backtracking the recent plugs, coils, and CP installs.

I just went out and did a bunch of wot pulls at all sorts of speeds. And no misfire, like wuttt. Really makes no sense lol. Oh well, I'm not going to loose sleep over it. I have a good Indy, I'll give him all the details if it suddenly becomes misfiring at EVERY hard pull. Seriously Thanks for all your input though, I appreciate it.

[ziekxq]

Originally Posted by OnlyGerman

Lpfp is stock

Did you get the lpfp recall done? There was an issue with the wirings... So the error you are getting could be related to that. Or lpfp just failing.... Stock lpfp shouldn't draw more power.

[OnlyGerman]

Originally Posted by ziekxq

Did you get the lpfp recall done? There was an issue with the wirings... So the error you are getting could be related to that. Or lpfp just failing.... Stock lpfp shouldn't draw more power.

Looks like the recall was until 7/11. Mine was a 2012 manufactured 11/2011

[Coach Pat]

Good Day All, I am having some random misfire on multiple cylinders(5,6),Replaced all 6 plugs and coils,LPFP and LPFP sensor,moved out coil 5 with 4 and 6 with 3 and the problem not following the move,Replace the plugs(Again)...it remains intermittent start is very smooth only when you put it under load stutters and then drive train light...Not sure what to do next ..HPFP or Injectors...

[S1nner]

Originally Posted by Coach Pat

Good Day All, I am having some random misfire on multiple cylinders(5,6),Replaced all 6 plugs and coils,LPFP and LPFP sensor,moved out coil 5 with 4 and 6 with 3 and the problem not following the move,Replace the plugs(Again)...it remains intermittent start is very smooth only when you put it under load stutters and then drive train light...Not sure what to do next ..HPFP or Injectors...

Did you move plugs as well or coils only? Also are coils OEM? Delphi?

[OnlyGerman]

Originally Posted by Coach Pat

Good Day All, I am having some random misfire on multiple cylinders(5,6),Replaced all 6 plugs and coils,LPFP and LPFP sensor,moved out coil 5 with 4 and 6 with 3 and the problem not following the move,Replace the plugs(Again)...it remains intermittent start is very smooth only when you put it under load stutters and then drive train light...Not sure what to do next ..HPFP or Injectors...

Like in my case, doesn't seem to be plugs or coils, maybe not even injectors.

[Coach Pat]

Originally Posted by subkg

Did you move plugs as well or coils only? Also are coils OEM? Delphi?

Hi,I moved coils and replaced all plugs (OEM PARTS Plugs and Coils)..LPFP(TI Automotive) and LPFP Sensor(OEM)..So now i am starting to think HPFP or Injectors but i am not sure as its intermittent...ECM codes 119202,11A210, Can you Please give me some direction as to what to do next.

On start smooth(in P) in Load(R or D) Initial slight stutter,if i drive slow below 2000 it seems fine but you can feel and hear the stutter during gear shift.

Thanks

[Coach Pat]

Originally Posted by OnlyGerman

Like in my case, doesn't seem to be plugs or coils, maybe not even injectors.

I am lost here..it seems to me i am getting a beating with this...normally the fix is fast this one i can seem to get to the Root-cause it starts to feel like i am throwing parts at it to fix

Thanks

[OnlyGerman]

Originally Posted by Coach Pat

I am lost here..it seems to me i am getting a beating with this...normally the fix is fast this one i can seem to get to the Root-cause it starts to feel like i am throwing parts at it to fix

Thanks

Is it everytime under hard acceleration?

[OnlyGerman]

Originally Posted by Coach Pat

I am lost here..it seems to me i am getting a beating with this...normally the fix is fast this one i can seem to get to the Root-cause it starts to feel like i am throwing parts at it to fix

Thanks

Also did you get codes for the LPFP before you changed it?

[mashpotato]

you mentioned you have misfire only in cylinder 5,6. Even with the new parts and after a swap. Wouldn't a bad hpfp affects all cylinders?

You can monitor hpfp pressure under wot, so you know if its the issue.

Do you have any codes in ISTA-D?

[Coach Pat]

Originally Posted by OnlyGerman

Is it everytime under hard acceleration?

I did mention that i am getting a random misfire as it moves around,I did not ISTA-D code,well my report from the company that did the test has no other codes,my OBD2 / EOBD(Konnwei KW818) reader only confirms random misfire. codes i got from the test was 101F01 (Not Plausible),119202 Fuel low pressure,Electrical: Short Circuit to Earth,11A210 Low pressure fuel system,Plausibility power of fuel pump is to high for actual pressure..

[Coach Pat]

Originally Posted by OnlyGerman

Also did you get codes for the LPFP before you changed it?

Thanks,Well i got the code 119202 and 11A210 so i made the call to do the replacement of the the LPFP and LPFP Sensor....If i run the engine and pull the coil i get response on all cylinders so i know i have spark..that made me think its fuel related.

[Coach Pat]

Originally Posted by subkg

Did you move plugs as well or coils only? Also are coils OEM? Delphi?

Plugs and Coils are OEM

[OnlyGerman]

Originally Posted by Coach Pat

I did mention that i am getting a random misfire as it moves around,I did not ISTA-D code,well my report from the company that did the test has no other codes,my OBD2 / EOBD(Konnwei KW818) reader only confirms random misfire. codes i got from the test was 101F01 (Not Plausible),119202 Fuel low pressure,Electrical: Short Circuit to Earth,11A210 Low pressure fuel system,Plausibility power of fuel pump is to high for actual pressure..

I got the same exact code for the lpfp, wow. I keep thinking the pump or sensor but not sure after your continued issues. There is definitely something else we are missing

[Coach Pat]

Originally Posted by OnlyGerman

I got the same exact code for the lpfp, wow. I keep thinking the pump or sensor but not sure after your continued issues. There is definitely something else we are missing

Lets hope we get some answers soon as i am all out of plans..Sending the car in 2 morrow will let you all know what was up with my F10 N55 535..if you have more info to consider please let me know...

[OnlyGerman]

Originally Posted by Coach Pat

Lets hope we get some answers soon as i am all out of plans..Sending the car in 2 morrow will let you all know what was up with my F10 N55 535..if you have more info to consider please let me know...

You are getting stutter at medium acceleration, where you can feel it correct? In my case it only happens under very hard acceleration, usually from lower speeds. Start and idle is fine and unless I am beating on it, I wouldn't even know there is a issue.

I mean for you, the only logical things left are the HPFP or injectors. You would think if it was injectors, we would see a related code for it. But for the HPFP, people say there is sometimes no fault for that and this may be early signs. Logs would be able to better determine that.