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Old 09-18-2015, 12:52 PM
65Sprint 65Sprint is offline
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Join Date: Apr 2015
Posts: 28
Default Re: 2003, 2.3L Misfire Under Certain Conditions

Just to wrapply up this thread, a new intake manifold has solved the problem. There is plenty of advice in older threads to the effect that if there is a mechanical problem with the runner/butterfly valves, the manifold needs to be replaced. I am now a believer.
Rich Hanning

2003 XLT (2.3L Duratec)
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2.3l, duratec, misfire, stumble

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