Shakes or Wobbles problem
1997 Ford F150 V8 Four Wheel Drive Automatic 100000 miles

when i start the truck up it shakes really bad and i guess thats a miss fire if i guess but i just changed the plugs and wires and valve cover gaskets and it still does it and i dont have a clue how to make it quit the egr copper tube is disconnected from the manifold but it always have been but it wouldnt make it shake and i dont no what else it could be?

as long as the manifold is plugged where the egr valve is disconnected on on both ends it wont matter.

have you cleaned the throttle body and checked the IAC module?

does it run good once the not idling?

it runs no matter what just when ur going its sounds horrable and miss really bad and just doesnt run good at all but what would the throtlle body have to do anything

is it a idle problem, or a problem that happens all the time.

if it was just idle the throttle body can greatly be afecting the idle if its gummed up.

no its good idle but just has a horrable shake that wouldnt make it shake this bad

so if the motor is runnign good but the vehicle is shaking i would be checking for bad motor mounts..