Question:

engine on 2004 ford focus running rough at idle but smooth when driving

by Guest12200345  |  2 years, 3 month(s) ago

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engine on 2004 ford focus running rough at idle but smooth when driving

 Tags: 2004, DRIVING, Engine, focus, ford, idle, rough, running, Smooth

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  1. Ali Abdullah
    Hi, You might have a cat converter restricted, there will be o2 codes with a restricted converter. How much exhaust flow is there? you can drop the exhaust down so the exhaust flow does not go through converter and if it gets power back

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