Old 03-19-09, 05:06 PM
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Join Date: Mar 2009
Location: pennsylvania
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I have a 1990 mercury marquis i have chaged the tranny filter and fluids i have also put a new speed control sensor on i dont see a madulator anywhere is the one and if not what makes it change from low gear to like 2nd and 3rd right now i only have one gear what can i do or check to fix this problem outside of changing transmissions
Old 03-19-09, 06:44 PM
Join Date: Jun 2008
Location: Eastern Georgia
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If memory serves your car should have a linkage or cable between the throttle body and the trans. there is a bushing in the end of this cable at the throttle body which would wear out and foul up the shifting. Cable is hard to see it is on the bottom of the throttle body.

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