Question about Ford F-150

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Ok i have a 2003 ford f-150 pickup it idles up and down, and hesitates on take off but after that its fine i checked the fuel pressure replaced the intake gaskets and put a maf sensor on it does anyone know what else it is

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Possible sticking idle air control valve (iac) held on by 2 bolts on top of enigne, ahs wire connector going to it and is held on by 2 bolts, on your engine i believe it is on the driver side of engnie located under plastic cover for your throttle body...try washing it out with carb cleaner after it is removed, if that helps it, relpace valve with factory componetn


hope this helps

Posted on Mar 23, 2011

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The engine boggs down at high rpm. For instance, hesitates and boggs down when going up a hill or highway speeds. Idles normally and runs fine at low speeds.


if the fuel filter hasn't been changed do so, if the fuel filter is ok and has been changed out due to this problem you will need to monitor the fuel pressure under a load and make sure it doesn't drop below 45 PSI, it it does you will need to replace the fuel pump and the fuel filter. U also do say if you have a check engine light or have had the system tested for trouble codes that may be triggered by this loss of power problem.

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Comment posted on Mar 04, 2009 also check the fuel pressure if the spark is ok, the ignition is the ,most common issue. Comment posted on Mar 04, 2009 also check the fuel pressure if the spark is ok, the ignition is the ,most common issue.

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