|
Xoutpost server transfer and maintenance is occurring.... |
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management |
|
LinkBack | Thread Tools | Display Modes |
#11
|
||||
|
||||
Cylinder 2 Misfire help N[emoji239]2B
Deoxit pro gold can't be beat.
__________________
2011 E70 • N55 (me) 2012 E70 • N63 (wife) Last edited by andrewwynn; 11-10-2024 at 11:31 AM. |
Sponsored Links | |
|
#12
|
|||
|
|||
haven't tried cleaning the ECU but I did a compression test all of the cylinders passenger side were about 120 Psi, opened the valve cover and checked the springs and everything looked good too, what could be next? also the idle misfire has gotten really bad the whole car shakes. I doubt it's the fuel injectors but I might have to check those next
|
#13
|
|||
|
|||
The DME is not under the dash.
Have you checked the eccentric cam gears? If the valve covers were off it should be easy to check those. Excessive wear on those can cause problems similar to what you are describing. |
#14
|
|||
|
|||
I don't remember checking the eccentric cam gears but they should probably be fine because my dad and i looked around pretty good and the engine has been slightly "rebuilt", I honestly don't want to open up the valve cover again because it was a complete pain in the ass for me however we only checked one side. could there be any simpler problems to troubleshoot?
|
#15
|
|||
|
|||
I haven't done much with valvetronic but if the mis is only at idle I think wear in the valvetronic linkage is highly suspect. Maybe try bumping up the idle speed.
__________________
1988 325is (purchased new) sold 2004 X5 3.0 2005 X3 2.5 2008 X5 3.0 (new to me) |
#16
|
|||
|
|||
Idle speed can not easily be adjusted.
To check the eccentric cam gears you only need to remove the valvetronic motors. I would check both sides since you only removed one valve cover before. You can't say the engine is healthy if you only checked one bank. Saying the engine has been slightly "rebuilt" is actually cause for concern for me, to be honest. Most people don't know how to rebuilt the N62 correctly. I would |
#17
|
||||
|
||||
Quote:
In the spirit of doing the easy stuff before the hard and expensive stuff, You may want to check all your grounds. Especially the ones under the coil covers. Though the fact that your OBD port isn’t working seems to point to the DME perhaps…at least in my one brain cell. Can you access other modules, like the transmission module? My single cylinder misfire turned out to be water intrusion into the actual harness during a coolant pipe job I did.
__________________
Current Original owner 2002 E53 X5 4.4i to 4.6i swap 2025 G06 X5 50e Former 1972 Audi Fox 1986 Saab 900S 1996 BMW Z3 1998 BMW E36 M3 Sedan 2004 BMW E46 M3 2006 Audi A3 Quatro 1993 Mopar 318 Jeep Grand Cherokee 2015 V6 Jeep Grand Cherokee Last edited by Henn28; 11-10-2024 at 12:43 PM. |
#18
|
|||
|
|||
Alright imma take your advice probably around Thanksgiving break I can focus on my car.
Does anyone know why it's usually whenever the car is cold? for example, it only happens in drive from what I've experienced usually when you gas it a little bit but not suddenly. I try to replicate it in Park but no misfire, but in Drive, if the car does not warm up for a good minute or two (by that I mean past the cold start cycle, I hold revs at 1k then 2k then 3k then 4k till my coolant is close to the middle) it'll give me the error. I usually just drive with my OBD2 connected and delete it till it goes away. once my car is warm and the code has been cleared once or twice it runs great and pulls through traffic with no problem until I come to a stop and idle then I meet another misfire which literally moves the whole car (I think this is a completely different misfire) I'm going to look for my old ECU hopefully I can find it so wish me luck. |
#19
|
|||
|
|||
Quote:
the guy who rebuilt it pointed at multiple "problems" till we found out something in the valvetrain went wrong (I forgot what, it was a spring or something) he even made us change our ECU which was not needed from what I know. |
#20
|
|||
|
|||
Quote:
|
Bookmarks |
Thread Tools | |
Display Modes | |
|
|
|