I have a 94 F-150 with 83k miles on it. When I am at a complete stop and hit the gas the engine hesitates and seems to struggle for a bit, the lighter I touch the gas pedal the more it hesitates, it even stalled on me once in a fast food line when I just tapped it to move forward a bit. There is no other problems with the truck, it runs wonderful and I got it up to 75mph on the highway and it is smooth as can be. Is this anything serious? What can I do to correct the problem.

 

Check my response to your previous post on https://www.f150online.com/f150board...ML/004142.html

Ian

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99 Expedition EB
5.4l, 4x4, 4.10 LS
WMS Tube, Bassani Cat Back Exhaust, Superchip Flipchip

 

Ian, I ran some fuel injector cleaners though the tank, it helped but it is still there, I am going to go back to Straus today and pick up maybe 2 bottles this time and throw it in the tank with less gas, i filled up the tank last time, see if that will get rid of it compeletely, I am thinking the more concentrated it is the better it will work, but most likely it is a carbon build up somewhere.

 

On my truck, you could run cleaner through the tank forever and the problem would still be there because the problem is upstream of the injectors (at the TB). You have to open it up and physically clean it.

Ian

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99 Expedition EB
5.4l, 4x4, 4.10 LS
WMS Tube, Bassani Cat Back Exhaust, Superchip Flipchip

 

go to an autozone or any other car parts store and get a throttle body cleaner kit.

this should helped.
it worked on my 98.