Ford Focus Forum, Ford Focus ST Forum - View Single Post - ZX5 engine stumble when stopped, help!
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Old 11-17-2011, 09:11 AM   #14
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What I Drive: 2002 gunmetal gray zx3/2007 zx3 ses

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Have to say sounds like an intake leak.You should always check whatever work you just performed before suspecting anything else. You can spray a little wd-40 where the intake and head meet and if the idle goes up you found it. Disconnect battery for at least 15 minutes to reset and it should relearn within five minutes of driving.
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