If the clunk is most noticeable at takeoff or when coming to a stop, the u-joints on the drive shaft probably need to be replaced.
check the fluid in the rear end it might be dry causing medal to grind causing a clunk noise or the gears in the rear end or worn done causing it to do the same thing
3.08
Remove "Banjo" cover
lots of play in the pinon
Any brand of WD40 oil will work.
3.54 is stock
Probably at the rear lower end of engine--follow the + battery cable
Nissan. the Rangers have tall rear end gears.
The speed sensor is located on the differential (rear end) I have a 99 Ford Ranger and have recently replaced one. EASY! Good luck!
The 1997 Ford Ranger model was available from as early as 1993. So all models between 1993 and 1997 will have interchangeable body panels.
Possibly a worn out universal joint.
I ASSUME axle code " 86 " is the same as it is on the ( 1996 ) Ford Ranger ( 3.73 gear ratio , conventional / non - limited slip )