M40 problem

[luxyoulongtime]

hello there i need help! I have a `91 318i with a M40 engine, when driving the car judders in the lower rev range, above 3500rpm it feels fine.When started from cold the idle is a bit eratic and when the throttle is blipped it tries to cut out then the revs come back up.I have replaced the rubber induction pipe which was split but has not cured the problem.Any ideas would be much appriciated.Cheeeers

[Simon]

Try changing the blue temp sensor, this sensor tells the ecu when the car is cold/warm and fuels it accordingly, sounds like it may be overfuelling/underfuelling the car.

[luxyoulongtime]

If that is the under the inlet manifold i have changed that one with no sucess!

[Simon]

Hmm yes that's the one! Back to the drawing board then!

[Jhonno]

try changin the airflow meter.. - could be the Temp sensor in that...