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#1 (permalink) Old 04-04-2009, 10:45 AM
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engine cut out at 3800 rpm

I have a 89 325i vert, everything is good until I reach about 3800 rpm's then the engine has a power loss. I have checked the fuel pressure regulator, the full throttle switch and the mass air flow sensor, no luck so far, any ideas on what I should do next
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#2 (permalink) Old 04-04-2009, 11:54 AM
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Could be :


camshaft sensor

crankshaft sensor

Im not sure what of the above sensors you have but one controls the injectors and the other the spark.


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#3 (permalink) Old 04-10-2009, 09:18 PM
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computer input or computer failure if it is software/electrical.

Broken valve spring if it is mechanical.

Those would be my first 2 things to run down along with what has already been mentioned above.

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