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loss of power


cfc004
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iv posted before as regards loss of power at 6000 rpms when put foot flat to floor seems like it wont change from 4th to 5th and sticking..iv a 330 coupe auto iv had 2 coils replaced as per garage but each time it happens no fault code shown...is it poss that gearbox oil needs replacing even tho these are spos to b permanantly sealed for life please any ideas also had air mass meter fitted as garage at bmw thout it mite be the prob

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  • 2 years later...

so you've changed all the coil packs. rough running loss of power could be camshaft inlet or exhaust sensor (if fitted to your particular BMW). they would normally throw a fault code but i have first hand experience of lack of power and poor running, turned out it was the camshaft inlet sensor, cost is about £60 i would only buy genuine part. clutching at straws without the fault codes though...

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