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cfc004

loss of power

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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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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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