Originally Posted by okieinalaska
Craig wondered the same thing. It is 4x4. The speedometer had gone crazya few times before over the years but always started working again. Once I was doing 50 and it said I was doing 110. Also strangely enough it now gets 20 mpg. When historically it only got 14 and got worse recently.
I suggest you get it checked out. Maybe a good 4WD shop could verify that the front and rear axle ratios are the same. You could seriously
muck up your drive train with 4WD engaged if the two are different!
Stuck cables and pickup errors can cause wacky speedometer and odometer readings, but
you just had the rear axle replaced. I'd find a way to be absolutely certain
that repair/replacement is not the cause.