twittyaustin

2005 f150 ill put it in drive and it doesnt move by it self, i have to hit the gas to get it to move and it jerks then starts moveing. then after that every thing is fine driveing and question what it could be?

Mitchy21

Stuck caliper? Mine has done that before.

lariatboy

Seized caliper or collapsed flex line.

twittyaustin

nothing with the breaks thoes are all good. it jerks as in like the tranny or something

twittyaustin

its like i have no power. i couldnt even spin tires in the dirt

GrnMachine210

How many miles and what engine?

twittyaustin

says 104k and 4.6
but it wasnt the orginal motor

twittyaustin

bumnp

Mitchy21

How sure are you it's not the caliper? This sounds like a classic case of a caliper going bad. Go out and take it for a fifteen minute drive, come back and check for heat on your wheels. If you have a stuck caliper, that wheel will get much hotter than the rest.

twittyaustin

because if it was a caliper i wouldnt feel a clunk when i first step on the gas