Join Date: Nov 2011
Location: Virginia Beach, Virginia
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2001 540i obd2 codes 1341,1343,1345,1347
misfire bank 1-4...i changed plugs, both cam sensors, all 8 coil packs are good and the fuel filter is new as well. i dont know what test i could do for the maf sensor but it is not clogged nor dirty. the best clue for all the smart ones out there is that i could drive it but wont carry past 4000 rpms then the check engine light starts to flash. this car was running sweet until just today, it started acting up which is when i googled the codes and the forums had one man with the exact same problem. i changed everything i could think of and did not see any vacuum leaks. i have not done a compression check yet because i have to get that from my buddy. no oil in the radiator and no water in the oil so i dont think i have a head gasket blown, but not sure...
any thoughts? thank you in advance for helping out a newbie to this forum, but love every BMW i have ever owed and worked on