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timothychemaly

My car won't rev beyond 4,000 rpm. I asked your advice and fitted a new mass airflow sensor. Now the car will rev past 4,000 rpm when in neutral (which it would not do before, so a definite improvement), but will not rev past 4,000 rpm when in gear, whether automatic or triptronic (manual).

Any suggestions?

Anon

Hi there,
From here, you may need to take it to a BMW specialist who should know straight away what the fault/ faults are and point you in the right direction. The danger now is that you may end up replacing parts that won't make a difference, I'm sure yours won't be the only car to experience this kind of problem.