Engine Performance problem
1997 BMW 540i V8 Two Wheel Drive Automatic 150000 miles
I am stumped, I am trying to figuere out why my 540i is running rough when it idles, it will sometimes do the same at highway speeds and the engine light will flash. Some people have told me I may have bad coils, bad intake seals, plugs and plug connectors, but I have replaced the spark plugs and 4 plug conectors and had the coils looked at and still idles bad, even checked out the intake seals and there still like new. I do however have a bad o2 sensor on bank 1, could that be the problem? It does go away after the engine light stop flashing, but the problem returns. HELP ME BEFORE I SELL THIS NICE CAR IF I CANT GET HELP!
have the same problem?
Sunday, May 31st, 2009 AT 7:33 PM