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Steve
Steve, BMW Expert
Category: BMW
Satisfied Customers: 24175
Experience:  BMW Expert
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BMW 3 series had misfire message on cylinder 4. new coil fitted

Customer Question

BMW 3 series had misfire message on cylinder 4. new coil fitted and was ok for a month or so now the EML light on again, car took some time to start this morning but did eventually but was then "shuddering" for quite a distance. When parked up and started car again the EML light didnt come on and engine was ok. Any advice as I am taking to garage this afternoon please.
Submitted: 3 years ago.
Category: BMW
Expert:  Steve replied 3 years ago.

this is most commonly caused by a failed throttle body or failed throttle body wiring harness.

 

you should have the faults read from the car using a factory BMW scan tool or equivalent as this will provide much more detail than a generic tool. the wiring harness throttle section also needs to be checked carefully

 

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