HowardBerguer answered 9 years ago
Yes, replace it. From 1999 to 2005 BMW 3 series is famous for having the PCV system clogged and setting up the "check engine" light with codes not related to it also making it run like S**T... You know you must use Premium fuel no matter what, most BMW owners don't and end up expending lots of dollars later on repairs. Also the valve cover gasket is a common area for oil leaking, you must replace all the bolts "grommets" at the same time to cure the problem. Check your intake hoses for cracks before replacing the MASS AIR FLOW SENSOR.
Mechanic said replace fuel filter. Should I replace that or mass air flow sensor.?
2002 BMW 3 Series 325i Sedan RWD
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Maintenance & Repair
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