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Old 11-26-2010, 11:14 PM   #4
Eliott's-BMW
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Join Date: Oct 2008
Location: TX-DFW
Posts: 1,099
My Ride: E46 3-Pedal Mafia
Quote:
Originally Posted by jdstrickland View Post
Why are you replacing the gas cap? Did you get a code to indicate an Evaporative Emission System fault?

There are literally a thousand and one reasons for the Check Engine light to come on. Going to the store and buying parts in hopes of hitting the right one is a very expensive troubleshooting technique. You really should buy an OBD II Scan Tool to pull the codes so you know which parts to put into your shopping basket.
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