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Old 11-27-2010, 12:14 AM   #4
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Eliott's-BMW's Avatar
Join Date: Oct 2008
Location: TX-DFW
Posts: 1,099
My Ride: E46 3-Pedal Mafia
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.
Who has the skills?
e30 project

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