BMW E46 M3 Ignition Coil Replacement and Cylinder Misfire

This video goes through the steps to to diagnose and replace an ignition coil or coils on a BMW E46 M3 S54 Engine.
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Category:

Autos & Vehicles

Tags:

• BMW
• e46
• m3
• e46m3
• how
• to
• change
• an
• ignition
• coil
• replacement
• bmpdesign
• bmp
• design
• misfire
• race
• supersprint
• bosch
• bremi
• cylinder
• engine
• running
• rough
• bimmer
• auto
• tuning
• turbo

[atourdeforce]

@528im52 i have both plugged out now and its running fine, better than it was, but wants to conc out if i feather the throttle at very low revs. i have 2 sensors ordered. again. thanks very much for the replys. subbed!!

[528im52]

@atourdeforce It sounds like your front O2 sensors have gone out, you cannot run without the front O2 sensors on your car. If you unplug them, the car will automatically go into "limp" mode and will not be very drivable for daily driving.

[atourdeforce]

@528im52 chers for replying back mate, last question, all the boots are good no air leaks, no bad coils or spark plugs,tried cleaning the sensors, car still runs the same, tried testing them , and the voltage was going all over the place, i did the flame test(im fairly sure that means there broke)?? if i were to unplug them from what i have read it would make the car run rich, but if they were at fault would the shudder go out of the engine if i unplugged them for a few days?? thanks again dude.

[528im52]

@atourdeforce That can be a variety of things, the most common are the oxygen sensors and also any cracks or holes in the rubber intake bellows which would require replacement. These are the things that should be checked and replaced first, beyond that there could be an issue with the fuel system, but in many cases a lean code is due to one of the reasons I listed above.

[atourdeforce]

@528im52 yes does that mean o2 sensors are on the blink, i have the same problem, engine check light is on(it goes away sometimes) and recently i have experienced shuddering or vibration at idle, sometime the engine seams like its gonna die, and sometimes i have no power(wont take off) was at the electro mechanic recently for a diff problem and he said it came up engine mixture too lean. i really dont have the money to send it back again, could you please help me out, is it o2 sensors?? thanks

[jlinker6]

Great video! Very helpful! The mystery of what's going on with my car is solved, just a bad coil!

[Arontje]

gooood video. helped me alot!

[zao177]

Thank you for nice video!

[SenIoRToTA]

how much would fixing this cost

[majuwaqas]

Hey..its really very informative for me, I'm learning EFI System at a workshop but the guy there doesnt teach me exactly each thing. Can you please upload some EFI Trouble Shooting videos? So that i can learn what to check first if car doesnt start or car is misfiring etc. I'll keep in touch with you