E36 M3 3.2 Splutter/Jerk @ 3000 rpm

[Fly537]

My M3 is jerking at 3000rpm constant throttle, if i floor it, jerk stops and the car revs clean. Any ides as to what could be wrong? I serviced it when it started doing this, but new plugs/ fuel filter did not help! What else should I check

 

[zaleonardz]

Injectors...

COuld also very possibly be a vacuum leak, how is the idle ?

 

[Fly537]

sometimes the idle dips, but not constantly or in a set pattern. it might be in my head, but i feel when theres a bigger or stronger battery in the car it jerks less

 

[STREETRACER]

Bud you lamdas are on the way out! I'm 100% sure! Also try cleaning you air flow meter with elecroclean or carburetor cleaner!

 

[Clownshoe]

Actually it could be anything in the engine management circuit. Sensors, coils, computer. Most likely a sensor or coils. Luckily this can easily be pinpionted by reading the fault codes.

Sounds exactly like my car when the coils needed replacing.