E90 323i jerks/misfires

[dez]

Hi guys

I have had a jerking problem with my 06' 323i E90. At first it happened when i stopped at a traffic light some 4 weeks ago. It started jerking as i hit the brake. On accelerating u wont feel anything but just a drop in power. I called BMW and they towed the vehicle it was Saturday. On Monday they tested the car and they didn't see any problem with diagnostics and i collected car on Wednesday it was fine.

Today the car started again to jerk after i stopped at a service station and i drove straight to BMW. I parked the car, stopped engine and went in the BMW office. I came back with the service manager i started the car to show him and it was idling perfectly no jerking or misfiring.

Anyone who experienced this and what may be the problem

 

[BJORN.E90]

i experienced exactly the same problems with my E90 320i about 5 months ago, in my case it was failure on coil 3 , replaced all 4 coils and plugs, not sure why the diagnostics can't pick up anything wrong on your car.

 

[Caddy101]

:sorry:
Sorry to hear of your troubles bud. I also drive a 2006 323i.

Whats the mileage on your car?

 

[akash]

Sounds like it could be a coil pack.

 

[Loom]

When I read the title up to "E90 323i jerks" I thought you were referring to the people :rollsmile:

Would this http://autorepair.about.com/od/troubleshooting/ss/coiltest-manual.htm be a safe and sufficient way to test the coils?

 

[Philip Foglar]

Also check this: [video=youtube]

:thumbs:

 

[Lunatik]

i had a similar problem recently and it was an ignition coil :thumbs:

 

[dez]

@Caddy101

The car has 83000 KM.

 

[pempimpin]

When I read the title up to "E90 323i jerks" I thought you were referring to the people :rollsmile:

Would this http://autorepair.about.com/od/troubleshooting/ss/coiltest-manual.htm be a safe and sufficient way to test the coils?

:roflol:

 

[Blaino]

I'm experiencing the same problem, when plugged in it threw an error that the 5th and 6th cylinder coils where shot.

 

[Philip Foglar]

I'm experiencing the same problem, when plugged in it threw an error that the 5th and 6th cylinder coils where shot.

Have you replaced those two coils then?

 

[Buzz2zn]

I had a similar problem.Just changed my plugs and I was back in the game.

 

[snvlgp]

Recently picked up a misfire on my E90 323i 2007. Misfire can easily be heard at exhaust when car is idling, the idle sits at about 7000rpm and isnt very rough but you can feel a rocking motion in the car when it idles. Car slightly underpowered on take off and up inclines.

Have replaced all spark plugs and coils with slight improvement.

Any ideas of what to do next?

 

[DuckKnuckle]

Recently picked up a misfire on my E90 323i 2007. Misfire can easily be heard at exhaust when car is idling, the idle sits at about 7000rpm and isnt very rough but you can feel a rocking motion in the car when it idles. Car slightly underpowered on take off and up inclines.

Have replaced all spark plugs and coils with slight improvement.

Any ideas of what to do next?

I hope you mean idles at 700rpm.

I heard rocking issues when idling at stand still could be vanos related? And misfires when driving - possibly DISA flap related?

Sent from my SM-N910H using Tapatalk

 

[snvlgp]

Yeah 700rpm...sorry.

Vanos you say?