eng misses on hills

[hi my 330ci jerks on hills only, just a slight bit of throttle and in that one spot it jerks, any idea's? I already replaced the o2 sensors top, plus new oil seperator and hoses, the car runs great everwhere else on the throttle. just a little pedal on a grade and it jerks, not like a miss, just short jerks

Originally Posted by patous

[hi my 330ci jerks on hills only, just a slight bit of throttle and in that one spot it jerks, any idea's? I already replaced the o2 sensors top, plus new oil seperator and hoses, the car runs great everwhere else on the throttle. just a little pedal on a grade and it jerks, not like a miss, just short jerks

My car(2004) does the same thing. When it was new the dealer would say it was bad gas. It's now 9 years old and I still don't have an answer. If you ever get an answer, please post it I'd love to know what the problem is. The car passes the Calif smog test every two years, so I live with the problem.
Bob

VANOS Stutter....

Originally Posted by Fast Bob

VANOS Stutter....

Next month I'm getting my oil changed at my Indy shop. I'll talk to him about your suggestion. Thanks,
Bob

I found the problem it's a dirty throttle valve. to fix remove the throttle body and clean really good