Question about 2004 Ford F150

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F150 stalls out at intersections.

I have a F150 FX4 and it stalls out when i coast into a stoplight or stop sign. It has done it on several ocassions and the mass airflow sensor was just replaced. It has done it once this this maintenance was performed.

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Clean the throttle body and idle air control valve unless the valve has a plastic body which should be replaced because the harsh cleaner would damage it. If the idle air valve has a metal body you can clean it. Also you may want to check and or clean you EGR valve they are also known to build carbon and cause internal vacuum leaks causing a low idle stall

Posted on Jul 18, 2009

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I'd remove the idle air control valve & clean it & port it comes out of with throttle body spray cleaner, or carburetor cleaner, and try that. If it cures it, then later start to do it again, replace it.

Posted on Jul 17, 2009

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Check there are no air leaks on the air intake system. - check all the clamps/hoses etc that may have been removed to replace airflow sensor.

Posted on Jul 17, 2009

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