Have a 1999 e350 w/v10 engine. Will transmission fit into 1997 e350 with v8

SOURCE: 1995 ford econoline van speedo/trans

It is either the speed sensor, the wireing in between ot the speedometer module it self. The sensor sends pulse train signal to the speedometer module and there it drives the speedometer and is divided in frequency by about 7 and feed to the computer and the cruise control. When the signal drops the Engine management computer thinks the speed is real slow and raises the transmission pressure.

In the one I had it was a cold solder jooint on the bacjk of the speedometer module itself but this was the divided output and the speedometer itself still worked. The easyest part would be the sensor that mounts on the rear axile I believe and should cost less than 30.00 dollars. If not that thebn it's the wiring or the speedometer module electronics..

SOURCE: need picture location of spark plugs on 2001 ford

you have to go thou the inside of the van the bonnet aka the dog house thats inside inthe mid of both the front seats you have to take your consol

SOURCE: Need to remove interior door panel

You'll need to remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. If needed, you can pull back the weather seal (can't reuse it, but it's not that important) and you will be able to access everything inside the door

SOURCE: 1999 ford e350 wont crank and i dont hear the selnoid

check your connection.

SOURCE: 1994 Ford E350 transmission seems like it slips at 45-55 MPH.

If you went 1k miles since that same issue occurred I would look at the transmission. A faulty torque converter, clogged fuel filter, or a clogged CAT can cause a delay in the shifting but it would happen right away not 1k miles later.