TCC(Torque Convertor Control(lockup)) sensor.Or another transmission control sensor. Bad sensor will cause erratic shifting. If your Check Engine light is on a code should show. Don't hesitate in getting a 2nd opinion. Try having Autoz... or another parts place hook it up. Add some Trans-x or other trusted additive to trans. fluid. Servos could be gummed up. WARNING: If you drive too long/many miles like that something really expensive will break.
A vacuum leak somewhere, or a tranny modulator, or both. Mechanic can do a vacuum test, or you can buy the vacuum meter and do it yourself. transmissin modulator (if your car uses one, that is) is located on the outside of the tranny and looks like a frisbee-shaped disk about the size of the base of a water glass, made of aluminum, and has a vacuum hose attached. buy at a parts store. (I'm betting on a vacuum leak, though)
Also
i suggest you to refer these gear shift issues, which are mostly noticed. These
are direct links with appropriate solutions to
the specific problems of gear ****.
GEAR SHIFT ISSUES
http://howtobyme.blogspot.com/2011/11/chrysler-pt-cruiser-only-goes-in-first.html
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Car is stuck in park and the shift will not move?
http://howtobyme.blogspot.com/2011/08/car-is-stuck-in-park-and-shift-will-not.html
http://howtobyme.blogspot.com/2011/11/car-will-not-come-out-of-park.html
http://howtobyme.blogspot.com/2011/11/automatic-transmission-will-not-go-into.html
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http://schematicsdiagram.blogspot.com/2011/12/car-wont-downshift-sometimes.html
http://schematicsdiagram.blogspot.com/2011/12/buick-park-avenuetransmission-will.html
http://schematicsdiagram.blogspot.com/2011/12/car-transmission-will-no-go-into-park.html
http://schematicsdiagram.blogspot.com/2011/12/shift-indicator-directly-goes-to-2nd.html
http://schematicsdiagram.blogspot.com/2012/01/third-gear-missing-and-engine-losing.html
http://technoanswers.blogspot.com/2012/01/chevrolet-silverado-has-whining-sound.html
http://technoanswers.blogspot.com/2012/01/hard-to-shift-gears-on-manual.html
http://technoanswers.blogspot.com/2012/01/car-hard-shift-at-slow-speeds.html
http://technoanswers.blogspot.com/2012/01/automatic-transmission-shift-lever-hard.html
http://schematicsdiagram.blogspot.in/2012/02/2000-nissan-maxima-shifts-hard.html
-------
http://schematicsdiagram.blogspot.in/2012/03/vehicle-noticed-sluggish-delayed-shifts.html
-------
http://schematicsdiagram.blogspot.in/2012/06/2007-hyundai-santa-fe-will-not-shift.html
These details will help.
Thanks.
http://repairhelpcenter.blogspot.in/2012/06/2007-chrysler-300-transmission-stuck-in.html
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1996 Toyota Corolla: Transmission
Shift Interlock will not Release?
http://technoanswers.blogspot.in/2012/04/1996-toyota-corolla-transmission-shift.html
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Lexus LS400: Transmission or Torque Converter?
http://technoanswers.blogspot.in/2012/04/lexus-ls400-transmission-or-torque.html
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Gear
indicator Shows "3" Instead Of "D"?
http://whoisbyme.blogspot.in/2012/07/gear-indicator-shows-3-instead-of-d.html
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2006 Chrysler 300c: Shifter Stuck in Park?
http://technoanswers.blogspot.in/2012/06/2006-chrysler-300c-shifter-stuck-in.html
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1998 Ford Expedition: Will not Shift Out of
Park?
http://schematicsdiagram.blogspot.in/2012/06/1998-ford-expedition-will-not-shift-out.html
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Car will not move when in gear?
http://repairhelpcenter.blogspot.in/2012/02/car-will-not-move-when-in-gear.html
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Mercedes-Benz transmission sticks in first gear?
http://technoanswers.blogspot.com/2012/01/mercedes-benz-transmission-sticks-in.html
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Mercedes Benz not engaging in first gear?
http://technoanswers.blogspot.com/2012/01/mercedes-benz-not-engaging-in-first.html
----------
Chrysler PT Cruiser only goes in First gear?
http://howtobyme.blogspot.com/2011/11/chrysler-pt-cruiser-only-goes-in-first.html
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Car is stuck in park and the shift will not move?
http://howtobyme.blogspot.com/2011/08/car-is-stuck-in-park-and-shift-will-not.html
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2007 Ford Expedition: How to shift car in neutral with Dead Battery
http://www.howtorepairguide.com/2012/11/2007-ford-expedition-how-to-shift-car.html
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2002 Nissan sentra will not go out of park mode?
http://technoanswers.blogspot.in/2012/02/2002-nissan-sentra-will-not-go-out-of.html
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Nissan Sentra stuck in park?
http://technoanswers.blogspot.in/2012/02/nissan-sentra-stuck-in-park.html
---------
Car will not come out of Park?
http://howtobyme.blogspot.com/2011/11/car-will-not-come-out-of-park.html
-----------
Automatic transmission will not go into high
gear?
http://howtobyme.blogspot.com/2011/11/automatic-transmission-will-not-go-into.html
----------
Car won't downshift sometimes?
http://schematicsdiagram.blogspot.com/2011/12/car-wont-downshift-sometimes.html
--------
Buick Park Avenue: Transmission will
Not shift into drive?
http://schematicsdiagram.blogspot.com/2011/12/buick-park-avenuetransmission-will.html
------------
No
First gear Starts In Second Gear
http://www.howtobyme.blogspot.com/2012/07/no-first-gear-starts-in-second-gear.html
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Ford Taurus won't shift from park?
http://schematicsdiagram.blogspot.com/2011/12/ford-taurus-wont-shift-from-park.html
---------
2006 Ford F150: Will Not Shift out Of Park?
http://technoanswers.blogspot.in/2012/06/2006-ford-f150-will-not-shift-out-of.html
--------
Car Transmission will not go into Park mode?
http://schematicsdiagram.blogspot.com/2011/12/car-transmission-will-no-go-into-park.html
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1998 Chrysler Voyager: Transmission Problem?
http://howtobyme.blogspot.in/2012/06/1998-chrysler-voyager-transmission.html
------
Shift indicator directly goes to 2nd when key
is turned ON?
http://schematicsdiagram.blogspot.com/2011/12/shift-indicator-directly-goes-to-2nd.html
--------
Third gear missing and engine losing power?
http://schematicsdiagram.blogspot.com/2012/01/third-gear-missing-and-engine-losing.html
--------
Chevrolet silverado has whining sound in gear?
http://technoanswers.blogspot.com/2012/01/chevrolet-silverado-has-whining-sound.html
----------
2002 Chevrolet Avalanche Z71: Gear shift
Issue?
http://whoisbyme.blogspot.in/2012/06/2002-chevrolet-avalanche-z71-gear-shift.html
----------
Hard to shift gears on Manual transmission?
http://technoanswers.blogspot.com/2012/01/hard-to-shift-gears-on-manual.html
--------
Car hard shift at slow speeds?
http://technoanswers.blogspot.com/2012/01/car-hard-shift-at-slow-speeds.html
---------
Transmission-Hard To Down Shift
http://technoanswers.blogspot.in/2012/07/transmission-hard-to-down-shift.html
---------
Automatic transmission shift lever hard to move on cold
mornings?
http://technoanswers.blogspot.com/2012/01/automatic-transmission-shift-lever-hard.html
------------
2000 Nissan maxima shifts hard?
http://schematicsdiagram.blogspot.in/2012/02/2000-nissan-maxima-shifts-hard.html
-------
Vehicle noticed sluggish delayed shifts while
driving?
http://schematicsdiagram.blogspot.in/2012/03/vehicle-noticed-sluggish-delayed-shifts.html
-------
2007 Hyundai Santa Fe: Will not Shift out of
Park Mode?
http://schematicsdiagram.blogspot.in/2012/06/2007-hyundai-santa-fe-will-not-shift.html
These details will help.
Thanks.
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Usually answered in minutes!
I am not sure, I have had regularly cheduled maintenance with the dealership, but they have closed their doors. It may be the first time.
Is this the first time you have ever changed the transmission fluid?
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