soobyhobby Posted April 5, 2014 Share Posted April 5, 2014 (edited) My 00 Outback started intermittently running very rough, very sluggish acceleration and threw a P0170 code (Fuel Trim Malfunction) Did some research and got a ton of possibilities. I dropped exhaust and replaced front O2 sensor, re-installed exhaust with new exhaust gaskets and replaced air filter while I was at it. Car in A-OK now. In all approx 2hrs. Edited April 5, 2014 by soobyhobby Quote Link to comment Share on other sites More sharing options...
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