Hello all, I have a 2002 F150 4.2 V6 auto trans not sure what model.
When I'm driving let's say between 50 and 55 and I coast down a grade
as I lay on the gas to go up the hill it down shifts to a lower gear which is
fine but it slams in kinda hard to the point where I'm kinda babying it
up the hills so it dosent down shift. Has anybody have any clues what this may
be and also some fixes, there are no dash board warning lights on so I'm
just asking for some advice thanks

 

I'm bumping this old question back to the top because I've had the same problem. Anyone else experience this?

 

My 02 Supercrew 5.4 FX4 does this too. It seems like the torque convertor may be going bad, but Im not sure. But when in OD, and I go up a hill, my truck kicks like a mule when the TC engages. Anyone have any better insight to this problem?

 

Yours sounds more like a low grade misfire - time for spark plugs and maybe cops.

 

Already did that but good idea.

 

I was referring to the hijack after yours.

 

I knew that...just testing you

 

I have the same problem. but it also happens on very hot days when i just want to give it gas on the freeway, it just kicks and kicks and sound like my belt is squealing. Any clue?