86 4x4 ranger no go
have a 86 ford ranger 2.3 runs great, clutch pedal has a little push tention but not too much, transfer case ingages front drive shaft, 5 speed i'm thinking fm145, but truck doesn't even try to move, no noise, shifter feels like it tries to engage all gears, but no grinding when pulling down road while shifting without applying clutch, clutch resevoir is full of fluid, any ideas before i tear into it? any way to determine if it's the clutch? transmission? or transfer case?