Hi Roy,

First check the Transmisison fluid.
It is the yellow dipstick just to the left of the Brake Cylinder.
Chek it with the engine running and the transmission in PARK.
It should be betweeen MIN and MAX and should be a bright RED color.

If it is a dark red or a brownish color, it needs to be flushed.

Has your transmission ever been serviced ?
How many miles do you have on your Mystique ?

Pete...

98.5 SE Sport Duratec ATX (P66L)
Black Clearcoat on Greystone
DOB 11/21/1997
DOP 12/25/1997
PIAA 510 Super White Driving Lights
SVT CAT-BACK EXHAUST (No Resonator)
DiabloSport Chip (LPQ4) - Engineered To Raise Hell
Too many other mods to list...
Sounds sweet, runs quick...
Crazy Horse Dyno @ 121.4 WHP/129.6 TQ