92 2.1 lean mixture - Saab 900 Bulletin Board - Saabnet.com
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92 2.1 lean mixture
Posted by steve (more from steve) on Wed, 24 Apr 2002 09:40:41
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As Anders and RS pointed out a couple days ago, this car is running lean (I first thought the emissions test fail on high CO meant rich). O2 sensor reads .17 V or even less when the engine is warm. Plugs are light colored -- definitely not sooty. O2 sensor fluctuates a little and settles at .11 to .13 V after reving up the engine.
I got the hang of pulling the fault codes and got 12223 (mixture too lean) and 12112 (incorrect mixture). Any ideas as to what would be causing the lean mixture?
The check engine light started staying on after the car sat unused for a month and I then put on a cat-back turbo exhaust on a non-turbo car. Check engine light would come on occaisionally before that.
posted by 206.220....
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