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Old 02-09-2013, 12:51 PM
Kevin Halbleib Kevin Halbleib is offline
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Location: Louisville
 
Join Date: Oct 2011
Posts: 95
Mein Auto: 740il
I pulled the plugs and replaced. Passenger side plugs were dry and old looking. Drivers side were a little normal and a couple were some oily.

Replaced. Seemed to be no change. Car will start and run. At idle speed very rough. If I rev up at higher rpm's smooths out in driveway.

I am assuming next step is 02 sensor. However I am not sure where to start. Should I buy one or can I simply unplug to test? Any advice?
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