The BMW e65 and e66 Seven-Series was introduced in the United States in model year 2002, replacing the popular e38, and sporting a brand new body style. It ended production just a few years ago in 2009, so many of these unique Bimmers are still on the roads today. One of the common problems associated with this series is rough idling and stalling.
The 7-series had several chassis variations, including the e65 short-wheel chassis and the e66 long-wheel chassis, and the lesser known bulletproof e67 and hydrogen e68. The problem with rough idling and stalling affects the popular e65 and e66 consumer versions, sometimes as early as just 2000 miles on the odometer.
Drivers have complained of the vehicle shaking and surging, and they were unable to reach speeds of over 30 or 35 mph. The Service Engine light might illuminate and the acceleration could be lethargic. In some cases, the problem is temporarily solved by simply shutting off the car and letting all the systems reset, then restarting.
This problem is most noticeable in the morning, which could be normal in some vehicles especially in colder climates, but with the prevalence of complaints about this issue, it is likely something more complex. Especially, since the rough idling has also been noticed by drivers who were traveling at high speeds on the highway. Another common theme among drivers experiencing the rough idling or stalling is that it happens more often in Manual Mode rather than Sport Mode.
One possible cause is that some of these vehicles may not be “firing on all cylinders,” but it is important to take the vehicle to a nearby German auto expert to have it properly diagnosed. Some vehicles have been repaired by replacing the ignition coil or fixing the misfires, but again, it is best to have it looked at by an independent BMW mechanic to find the actual cause.
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