1990 Toyota 4Runner shaking in 4 wheel drive

Hi there,

Check the condition of the front drive shaft universals and that they are securely bolted to the transmission and the diff flange, Is your car an independent front end? (A diff housing with visible drive shafts, not a rigid axle housing) if so also check for the same with these shafts and check the mounting bolts for the front diff housing, (not uncommon foe a mounting bolt to vibrate loose )

Mark (mhpautos)