hey guys i have a 2003 fx4 an sometimes when im goin up a hill an slightly accelrate an the truck shutters an vibrates real bad right under my feet usually win i accerlerate it shutters sometimes does any body know wat this is or had this same problem?

 

Could be a misfire. Pretty vauge, don't have much to go on.

 

one of my freinds told me its probally bands in the transmission slipping

 

Does it stop shuddering if you accelerate harder - enough to make it downshift?

 

Does it happen when the truck just shifts into OD at very low RPM? A low grade misfire from a bad COP will make the whole truck shake.

 

it happens when i accerlerate like win it jumps into a higher gear. like goin up a hill an yes the whole truck shakes sometimes

 

no it shudders when i accerlrate harder

 

That does sound like the tranny, but I believe it uses clutches, not bands.

 

yea thats wat i was thinkin

 

When was the last time the fluid was completely changed? How does the fluid look and smell?

 

the trans has clutches and 2 bands how many miles on the truck

 

Yea, my 05 lariat does that as well. If I floor it, it wont do it. But when I lightly accelerate it will do it sometimes. So I just stopped accelerating slowly

 

91 thosand

not sure but i plan on getting it serviced soon

 

If you have original plugs at 91k, you should change them on general principle. When you get the tranny serviced, use an exchange machine to get a complete replacement. A pan drop only changes 1/3 of the fluid.

 

^^can they do this at my dealer^^