Ford econoline van leaking unknown fluid HELP!!!!!!

do you have spark and fuel pressure ? will it start on starting fluid sprayed into the intake ?

blown head gasket

pour liquid glass into your radiator, its hard to find but effective.

Have no idea

Would have to be there to see it
& the problem

The box is just to distribute the fluid to all the brakes. Replacing lines means buying new ones and fitting them in the same positions. the brakes will then need bleeding. Maybe a job for the shop to be safe. What happened to the brakes, did they run out of fluid, if so you have a leak somewhere. Check all the wheels to see if any of the brake cylinder are leaking.

5W-30 conventional, but full synthetic is a good idea if your engine has no oil leaks.

the sensor is located on the driver side of the transmission case

It should be under the hood. Near the battery

you need to replace the half shaft.if it continues to leak it will only get worse and you could end up losing the transmission

Check tv cable, from throttle body to trans.