I know this is a Mercedes list, but I am having a problem with my BMW. It is a 2000 BMW 740iL with 216,000 miles. Yesterday I had to make a trip to a town about 35 miles away and it started acting up. It felt like a misfire. If I was going at a constant cruise on the highway (75-80 mph), it was going great. But, when I had to climb a hill or accelerate, it started sort of jerking, like a misfire. It felt like a bad plug or plug wire (I know this engine doesn't have wires, but that is what it felt like). As I went further it got worse. I arrived in the town, took care of my appointment and headed back. Same thing. If I had to accelerate, it started jerking and bucking. At a steady cruise it was fine. I decided I would replace the plugs (I have had it for over 40,000 miles and have not done them). I think they were done previously with a little over 120,000 miles. I stopped at Autozone and got the plugs and headed home. My house is ten minutes away. As I pulled into my subdivision, it stalled. It would not restart. It just cranked and cranked. So, I am pretty sure that means its fuel. I parked it on the first street and walked home (it was only 5-6 blocks). I thought I would try again in the morning. So, my wife and drove over and I tried starting the car. As soon as I hit the key, it cranked and turned over, but stumbled and died. Then, it would only crank -- not start.
Sounds like fuel, right? The SES light came on a week or so ago. I was going to bring it to my guy and assumed he would say, it was O2 sensor. Now, I am not so sure. The SES could be signaling misfire, because I think the computer shuts off fuel to misfiring cylinders. But, the fact that it will only crank now sounds like Fuel pump, fuel pump relay, etc. Last weekend, (not the one a couple of days ago, but the previous weekend), I drove to Ardmore Oklahoma and back (600 miles total driven) at highway speeds (sometimes even higher :) ) and it did great. No problems at all. The only thing I have noticed is that if I drove exclusively on the highway, I could get 25-26 MPG. But, the last few trips, the best I could get was 22-23 mpg and on this last trip it was 21. I had attributed that to either O2 sensor, or plugs or just winter fuel, heavy foot, etc. Anyone have any experience or ideas? If I can't get it started, I am going to have to tow it to a shop. Don Snook _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com All posts are the result of individual contributors and as such, those individuals are responsible for the content of the post. The list owner has no control over the content of the messages of each contributor.
