Hi all,
My car has just been into the BMW dealership for an oil and filter service, not due, but it has been 10,000 miles. The car is a BMW 130i LE.
The car started up fine this morning and drove to the dealership absolutely no issue. All I had done was an oil change and the oil filter. I have then got back in the car and started it up and the startup is really lumpy, the car shakes a lot, revs drop below 500, then bounce between 500-700 for a bit, and then jump to 1,100 and fall to idle speed (last part as you expect). I went back in and they got the technician to come out. He started my car and said that the startup was lumpy, and then checked the oil cap to see if it was on properly, which he says it was. He sort of just says that we only really took the oil cap off and changed the oil so that shouldn't have caused an issue and says to come back if the issue continues, as that lumpiness needs looking into.
I then got back in my car to leave but on starting it up again it was still super lumpy, annoyingly I can't tell how bad it was when the tech guy was in the car whilst I stood to the side. I started it up a few times and the issue persisted. Even once it was down to idle revs at about 600, there was still the occassional knock. So i decided to scan the car and got codes 29E0 and 29E1, which I haven't seen before and I can't imagine they were there when I drove this morning, as the car was fine.
What possible explanation could there be for a car that drove fine this morning but was really lumpy after a simple oil change? Ofc I cant guarantee those codes weren't there this morning but the car was definitely not lumpy like that because I would have noticed the whole car shaking and the rev needle going all over the place.
Many thanks
My car has just been into the BMW dealership for an oil and filter service, not due, but it has been 10,000 miles. The car is a BMW 130i LE.
The car started up fine this morning and drove to the dealership absolutely no issue. All I had done was an oil change and the oil filter. I have then got back in the car and started it up and the startup is really lumpy, the car shakes a lot, revs drop below 500, then bounce between 500-700 for a bit, and then jump to 1,100 and fall to idle speed (last part as you expect). I went back in and they got the technician to come out. He started my car and said that the startup was lumpy, and then checked the oil cap to see if it was on properly, which he says it was. He sort of just says that we only really took the oil cap off and changed the oil so that shouldn't have caused an issue and says to come back if the issue continues, as that lumpiness needs looking into.
I then got back in my car to leave but on starting it up again it was still super lumpy, annoyingly I can't tell how bad it was when the tech guy was in the car whilst I stood to the side. I started it up a few times and the issue persisted. Even once it was down to idle revs at about 600, there was still the occassional knock. So i decided to scan the car and got codes 29E0 and 29E1, which I haven't seen before and I can't imagine they were there when I drove this morning, as the car was fine.
What possible explanation could there be for a car that drove fine this morning but was really lumpy after a simple oil change? Ofc I cant guarantee those codes weren't there this morning but the car was definitely not lumpy like that because I would have noticed the whole car shaking and the rev needle going all over the place.
Many thanks