Quote:
Originally Posted by mpouliot
2001 BMW X5 E53 3.0 160K miles
Got codes for MAF replacement.
Also, transmission light came on after changing bad alternator.
Disconnected battery & transmission light went off.
Past few days, car runns fine but transmission light came back and downshifts hard..
Replaced MAF & disconnected battery again and transmission light went off (shifts fine now) but truck runs like crap.
Bad acceleration, feels like misfiring
Scratching my head!
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What brand MAF did you buy? I have seen a lot of cheap units cause huge issues. An OE manufacturer Siemens/VDO on sale at FCP Euro for $143 right now and has high marks as a replacement.