my 01 f150 boggs down at every stop then cuts off, i checked it and it threw me the mass air flow code but that wasnt the problem. i already tried cleaning the filter, changing the fuel filter, changing the idle air control, and cleaning the throtle body and it still does the same at every stop. it drives perfect on the highway but at evey stop i have to give it gas so it wont cut off, someone please help im tired of guessing what it might be...

 

I had a similiar problem after installing a new motor.

The IAC valve was suspect, so I swapped it out for a new one and it
sorted out the problem.
Check all your vacuum lines and if your running a blower check the one to the rear of the lower intake, the rubber connector may be split.