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Originally Posted by fisherdm
I have a 1997 Malibu w/ 97K miles. I don't drive it very much in warmer months when I ride a bike to work. Drove this week and check engine light came on. Friend plugged in a diagnostic comuter and w/ we got back Evaporative Emissions Control System Failure w/ P0440 code. I have read some postings that this may be from a loose gas cap but I checked and the cap was firmly seated. We cleared the code and the check engine light stayed off.
Any suggestions at where to start trouble shooting within the emissions system?
BTW, the car seems to be running just fine.
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Mine does the same thing about once a month, and has for a year, I just reset the code with a scanner, and everything works fine. (98 2.4 4cyl)