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View Full Version : 2009 e90 130000 miles vacuum leak



Bimmerboyjon
11-01-2021, 04:11 PM
Hi everyone,

Purchased my car at 108000 miles from a used car dealer for 5500 a year ago. Its at 131000 miles now and I have replaced all 4 tires to Pirelli P4's (its x drive and it had multiple different tires on it which were all low on tread pretty much when purchased), new head gasket, new starter, tensioner pully belt, spark plugs and a few other things. Recently I have a SES light on codes say MAF sensor that I replaced but it hasn't gone away. rpms dip below 500 sometimes at stops and the car lags when going from the stop. Thinking its a vaccum leak somewhere anyone have this issue before? Also, what parts would you recommend changing ahead of time to have the car last till 200000 miles without the part going (preventative maintance). Its a 2009 328xi. Thanks