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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > N55 Valvetronic issues



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      07-31-2022, 11:37 AM   #1
M-technik-3
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N55 Valvetronic issues

Car spit out check engine and shut down cylinder 4 injector and has constant misfire. Pulled codes it appears to be valvetronic issue. Appeared out of blue.
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      08-12-2022, 12:05 PM   #2
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Sorry to hear. Never had this issue, but I had surging rpms at startup and decided to replace the valvetronic motor + reprogram. I also replaced the ignition coils. Car only surges once now.

I recommend switching out the ignition coils for Delphi (buy all 6 at once), clear codes, then drive. If valvetronic code comes back then maybe the valvetronic motor needs to be changed.
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      08-15-2022, 05:07 AM   #3
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Past couplw of weeks been blistering hot so just been driving my E91 will start digging this week, My small window unit in garage can't keep up with 9 days of 90 degrees, So I was not even considering going in the garage
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