Rich bank one P0172 code and poppy exhaust - Focus Fanatics
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Old 10-02-2012, 05:56 PM   #1
SCTSVT
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Join Date: Feb 2012
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Location: Romeo, MI
What I Drive: 2003 Infra-Red SVT Focus ZX5

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Rich bank one P0172 code and poppy exhaust

I have a 03 SVT with 107k on her and I can't manage to kill the P0172 code. When I bought her at 88k I was told it had a full tune up done and O2 sensor and knock sensor changed when the timing belt and water pump were changed at 87k. Recently she started feeling tired and my gas mileage dropped from 23 to about 20 so I pulled a spark plug at 105k and seen it was all burnt up so I replaced them with the E3 plugs and I noticed she felt a little better but the new plugs still didn't fix the bog below 2500 rpm. Now I'm hearing the exhaust being more poppy than it was before and at lower rpm too. Does anyone have any ideas what my next course of action should be?

Additional info: bone stock other than a drop in K&N. Yes, I already cleaned the MAF with the MAF sensor cleaner
Steve



Last edited by SCTSVT; 10-02-2012 at 06:01 PM. Reason: added additional info
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