Engine rpm in max 6500rpm

saitat

New member
Hi, my 2006 z4m cannot go up after 6500rpm when driving on the road, there was an error code for the knock sensor and doesn’t help even changed, anyone can help?
 
Get the car plugged in and codes read.

It could be something as simple as a bad spark plug or coil. Need to do some troubleshooting and diagnosis.
 
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