Sounds exactly like my civic. I haven't gotten CEL's but I suspect my o2 sensor is going and that's why I can't get into lean burn anymore. Actually it pissed me off so much I pulled the insurance off that car and just have the Mustang insured and have been driving that. 1/8 Of a tank in 34 miles feels weird, but it's much more enjoyable to drive due to the car not pissing me off.
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