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Running rough at idle when I drive

Tiny
DMCCONN5
  • MEMBER
  • 2003 BMW 330
  • 128 MILES
I have a 2003 BMW 330i that is running rough at idle. When I drive, it feels like it is losing power. Sometimes the gears do not shift when supposed to. When at a stop light, the RPM's rev from 500-900? And it feels like the car is giving a little gas by itself. I replaced the spar kplugs, belts, fuel injection service, and fuel filter for over 800! I used all this money and the problem is not solved. I had the codes read and it came with about 7 codes. The mechanic said he would replace the back o2 sensors but I was under the impression that the back ones did not control how the car actually runs. Can anyone help?
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Saturday, January 7th, 2012 AT 8:13 PM

1 Reply

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Can you post the 7 codes? $800 is steep but dealers get big money for everything. You may be able to internet search (or run ad) in your area for local cheaper bmw home mechanic.
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Saturday, January 7th, 2012 AT 8:24 PM

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