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HELP! engine stumble (m) (archive)
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Posted by Peter 97 M3/4 on January 28, 2001 at 19:40:48:

today I was negotiating a long right sweeper at about half throttle running about 4K rpms, and hit the throttle at the apex and it bogged for a 1/2 second before it accelerated. Did it again a few minutes later, on another right sweeper. I had 3/4 tank of gas, so fuel slosh should not be the problem. THe stealer did just change out the crankshaft sensor though. I wonder if they remappped the ECU? I have noticed a slight engine stumble since I got it back, anybody have this problem after the crankshaft sensor replaced? I bought this car used from the dealer and I'm beginning to wonder if the prior owner had upgraded the software, and the dealer set it back to stock. Any ideas?

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