Okay everybody,

I am again asking for help. My M45 know has developed a stumble, the ABS, slip and vdc warning light comes on. Lights seem to reset and might stay off for a while without any issues. But when the stutter returns I back off accelerator, but the car continues to drive. The vehicle will do one of two things, from dead stop the car seems to have small stutter/miss but drives okay. The other thing it will do sometimes I'll be driving along at about 85mph or 3000rpm and the stutter will accrue, so I back off accelerator and keep at slower engine speeds and car will drive okay. I scan and have fault codes indicating C1185 accretor control, C1130 engine signal as well as P0335. I have replaced the crankshaft position sensors several times problem seems to be corrected but then will return. Any help would be great. My M currently has 316,205 miles. Any advice would be great.

316K?! That may be the highest mileage I've seen on one of these!

If the Crankshaft Position sensors are not OEM, problems will/can arise. Also maybe the plugs need to be changed.