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wont change gears Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Transmission Problems tykie1 Novice Mar 23, 2009, 4:03 PM Post #1 of 4 (2065 views) wont change gears Sign In I HAVE A 1990 MERCURY MARQUIS WITH A 5.0L ENG. I HAVE CHANGED THE TRANNY FILTER AND FLUID I HAVE PUT ON A NEW SPEED CONTROL SENSOR AND I CANT FIND A MODULATOR ANY WHERE ON THE TRANNY IS THERE ONE AND WHERE WHOULD IT BE FOUND IF NOT THEN WHAT CAUSES THE TRANNY TO SHIFT EXCEPT FOR THE STEP DOWN Tom Greenleaf Ultimate Carjunky / Moderator Mar 24, 2009, 1:49 AM Post #2 of 4 (2059 views) Re: wont change gears Sign In Not sure what you are asking. Are you saying it just stays in low gear? T tykie1 Novice Mar 24, 2009, 3:55 PM Post #3 of 4 (2053 views) Re: wont change gears Sign In yes it wont change to a high gear from park i go to drive and then as you drive it should change gears to a higher gear but it stays in what feels like 1st gear Tom Greenleaf Ultimate Carjunky / Moderator Mar 24, 2009, 4:16 PM Post #4 of 4 (2050 views) Re: wont change gears Sign In Did this problem just crop up with the recent work or is that WHY you did the work? There's a cable linkage at the throttle body with a fairly weak connector that if broken off and pulled could make the car think it's floored all the time. That cable is mechanically sensing throttle position and must be in place. When they break they usually won't downshift but might have jammed up last time the gas pedal was to the floor. How many miles and has this trans already gone thru an overhaul? It's pushing 20 already and could be on a second or third by now - all depending on use and condition, T   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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