I've got a '97 F-150 4.6L XLT... I've got a stick shift for it to go into 4x4 but it only goes into 2WD or Nutreal, no 4H or 4L. Would my truck have vacuum seals that need to be replaced? I know a little bit about mechanics but not alot, think anybody here could help me out?

 

so what your saying is you have a manual shift transfer case, you can engage the t-case but the hubs arent locking in?

 

Yes sir.

 

id check the vac diaphram on the front diff

 

Thanks I'll give that a try, I'll let you know if that was the problem or not.