e36 M3 jerking

[Fly537]

My m3 is jerking/ hesitating under constant throttle. It is recently seviced ( all agents parts). Noticed some black smoke and it's heavy on fuel. Any idea on what the problem could be?

 

[Peejay]

3.0 or 3.2?

 

[Fly537]

3.2

 

[StK]

You need to get the codes read,sounds like a dodgy lambda sensor but a diagnostics would confirm or at least point you in the right direction :thumbsup:

 

[Fly537]

when trying the carsoft diagnostics on my car it says module does not respond!!

 

[Peejay]

I 2nd the lambda sensor. Same problem happened 2 my cousins car.

 

[FKN16V]

could be coil packs

 

[STREETRACER]

Boet clean your air flow meter but I can almost guarantee you its the lambdas! My 3.2 did that every time n blew my lambdas! I replaced a couple every time I used leaded fuel AVGAS.. Now mine is bridged with a dastek chip and no lambdas at all! Car works like a mother fcker

 

[Smooth-ZN]

Do a read with the Original Bmw diagnostic tool...air mass or lamda's.