shift problem on 1996 Ford F-250

The truck wont shift right away only at a high rpm but you can shift it manualy using the colum fine. The truck does have an exhaust manifold leak could this be why if not any tips? Thank you, Ed.

by in Delran, NJ on September 28, 2009
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1 answer
ANSWER by , October 29, 2009
Hi Ed, The exhaust leak shouldn't cause this problem. Has the transmission fluid level been checked? If the fluid is low, this will cause this problem, if you don't see any leaks, and you have 4WD, then there may be an internal leak into the transfer case. If this is the case, have a repair shop refer to the technical service bulletin from Ford, TSB# 97-12-13