I have a 90 F350 4X4 truck, XLT Lariat 7.5L.


I was driving it, already going about 15mph and accelerating. The truck made a loud noise and I pulled over. I tried to shift it into park and the loud crunching noise happened again. I had to shut off the engine to keep it in park and even then I had to use the E-Brake to keep it from rolling back.


I am trying to find out if this may be an easy fix like the shifter cable or if the tranny needs rebuilding.


Thanks in advance!!!

 

Until you do the following , it could be either one.
You need to get under the vehicle with the parking brake applied and wheels chocked , to be safe, and watch if the shift cable is actually putting the lever on the side of the trans into park. If it does , then there could be an internal trans problem.
If the lever doesn't get all the way to the park detent, the cable end has an adjustment where it attaches to the lever on the trans. You can disengage the adjustment, place the lever all the way into the park detent, then place the shift lever in the vehicle in the park position then lock the adjustment. It really is easy to do.
Let us know how you make out with this.

Something else to check, make sure the driveshaft did not separate due to a broken u-joint.