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SonomaGTLN2 · 04-04-2014, 01:08 AM

Hey all,
Just turned 90,000 miles on my 95 318ti, 7k after a headgasket change. Just today after a fuel fill up I felt a violent lurching about 2000-3000rpm in first and 2nd gear. Also had some lighter stumbling at ~5500 in 3rd. I am assuming i got a bad batch of gas because this car hasn't had any issues whatsoever since I replaced the headgasket! I am getting no CEL light on constantly but it does flash during the lurching and the RPM gauge wants to fall to zero. By doing the stomp test it showed the 1226 knock sensor code. Would a bad knock sensor actually cause such a violent lurch?

I have experience with E30 M42's and the only time I felt something like this was due to a bad coil driver in the DME.

04-04-2014, 01:08 AM	#1
SonomaGTLN2 Junior Member Join Date: Nov 2013 Location: Michigan Posts: 10 iTrader: (0) Photo Gallery	Violent Lurching in 1st and 2nd Gear Hey all, Just turned 90,000 miles on my 95 318ti, 7k after a headgasket change. Just today after a fuel fill up I felt a violent lurching about 2000-3000rpm in first and 2nd gear. Also had some lighter stumbling at ~5500 in 3rd. I am assuming i got a bad batch of gas because this car hasn't had any issues whatsoever since I replaced the headgasket! I am getting no CEL light on constantly but it does flash during the lurching and the RPM gauge wants to fall to zero. By doing the stomp test it showed the 1226 knock sensor code. Would a bad knock sensor actually cause such a violent lurch? I have experience with E30 M42's and the only time I felt something like this was due to a bad coil driver in the DME.