Hey there, I have a 2001 bmw 330ci manual. It runs great but sometimes after a pull the car will lose a few cylinders. It goes back to normal after I turn it off and back on again, this has happened twice in total and it has been months since the first time but tonight it happened again. I have no clue if the problem is directly related to me doing pulls with it but both times it’s happened the car falls on its face around 5k rpm in second gear. Has anyone else had this problem?
occasional misfires, clear after restart
-
February's E46 Ride of the Month Is Now Open For Entries!
1 - 8 of 8 Posts
Joined
·
5,128 Posts
Agreed- pay special attention to 'shadow' codes in this case.
A sensor that loses signal can do it, too- and it may only be losing signal
at higher rpms under full load.
Or a coil may be failing- they work hardest in those conditions.
It SOUNDS like a fuel delivery problem, but that usually doesn't result in a misfire
after the fact.
t
A sensor that loses signal can do it, too- and it may only be losing signal
at higher rpms under full load.
Or a coil may be failing- they work hardest in those conditions.
It SOUNDS like a fuel delivery problem, but that usually doesn't result in a misfire
after the fact.
t
I’ve had the same issue for a while. Only under very high load. Engine will shut down a cylinder or two after getting “misfire with fuel cutoff”.
I think it’s to do with an aftermarket fuel pump which can’t keep up the fuel flow. I don’t get the problem often enough to justify changing the pump
I think it’s to do with an aftermarket fuel pump which can’t keep up the fuel flow. I don’t get the problem often enough to justify changing the pump
Same issue with me, only it happens when idling too. I've replaced the fuel pump and it does it less but still happens occasionally. I've got lean codes from both banks. I'll address those when the weather gets a little warmer.
We get several threads like this one every single day. If people browse the Important Links, do some reading, check the fault codes and important PIDs at hot idle, they can solve it themselves most times. But we are here to help out. Let’s see what OP responds with.
Oh ok, I also have a intermittent misfire on cold starts that tends to go away after 10-20 seconds, could the two problems be related?
1 - 8 of 8 Posts
