335i bucking/surging

Iwantm3 · 03-20-2011, 05:06 AM

My car is having like little hick ups under a light acceleration and sometimes a heavy buck under a full throttle , what can cause this ? Adjust BOV ? NEW plugs ? Leaks ?

beta17 · 03-20-2011, 07:16 AM

only after cold start or also warm??
i got the same issue under cold start and for the first minutes.... no codes found (bt cable) and also bmw doesn't found any codes, but they replaced all injectors and the problem was gone!

pits200 · 03-20-2011, 10:09 AM

That's funny because I noticed that for like 2 days about a week ago. My car was fully warmed up and under very light acceleration I could feel a surge, but like a backwards surge. It wasn't pushing me forward but it was like I was hitting the brakes at 2% for a second then it released and would resume normal speed.

03-20-2011, 05:06 AM	#1
Iwantm3 Banned 38 Rep 1,284 Posts Drives: 335i M sport Join Date: Mar 2009 Location: US AND A I likeeeee iTrader: (1)	335i bucking/surging My car is having like little hick ups under a light acceleration and sometimes a heavy buck under a full throttle , what can cause this ? Adjust BOV ? NEW plugs ? Leaks ?
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03-20-2011, 07:16 AM	#2
beta17 Private First Class 20 Rep 168 Posts Drives: E92 335i Coupé M-Tech Join Date: Apr 2009 Location: Zurich iTrader: (1)	only after cold start or also warm?? i got the same issue under cold start and for the first minutes.... no codes found (bt cable) and also bmw doesn't found any codes, but they replaced all injectors and the problem was gone! __________________ STOCK
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03-20-2011, 10:09 AM	#3
pits200 Colonel 552 Rep 2,598 Posts Drives: 09 335i X-Drive Black Sapphire Join Date: Mar 2010 Location: Pittsburgh iTrader: (1)	That's funny because I noticed that for like 2 days about a week ago. My car was fully warmed up and under very light acceleration I could feel a surge, but like a backwards surge. It wasn't pushing me forward but it was like I was hitting the brakes at 2% for a second then it released and would resume normal speed.
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