transmission or transfer case on 1994 Ford F-150

when the auto transmission shifts in to a higher gear at 25-30 it jerks forward but it seems to take a lot of acceleration to move much faster 40-65

by in Los Lunas, NM on April 26, 2014
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1 answer 3 comments
ANSWER by , April 26, 2014
When you say acceleration , are you referring to engine RPMs ?
COMMENT by , April 27, 2014
Yes
COMMENT by , April 27, 2014
Trans slipping? Try shifting through the gears manually to see where it 'flares' the most.
COMMENT by , April 28, 2014
just drive . 2&1 are ok