A little vibration is normal when your doing 70. But if there's quite a bit, you may have an unbalanced tire.
If you have a "check engine" light on, start with having the codes read. A misfire code can tell you which cylinder or cylinders are having problems. A misfire could be the cause of your engine vibration.
http://wiki.answers.com/Q/Where_can_you_find_the_wiring_diagram_for_a_1982_ford_e3501982 ford e350
(1)Bad tires, (2)front end alignment, (3)bent drive shaft are the most common reasons for vibration.
how many o2 sensors on a ford e350 van 2003
It can start with just one battery.
My 1997 e350 has 6x8
How do you program the keyless entry on a 2005 Ford E350 Van?
bulb gone? fuse burned? battery dead?
e350 is bad that's why
The E350 is an Ecnoline van, The f350 is a Truck
Ford e350oil capavity
No the wiring isn't the same