Transmission won't shift

If it's hesitant to shift, or not shifting at all, it could be a simple fix.
The first thing you'll have to do is to check the transmission fluid. Allow your van time to completely warm up before doing this. I recommend you do this while it is running. If it is low on fluid, there's your problem. If the fluid level is okay, then you may need the transmission filter and fluid both changed. Changing you fluid/filter is relatively simple. It's similar to an oil change with the exception being that the filter is inside the transmission, visible only when you remove the transmission pan. The filter isn't like an oil filter, it's more akin to your filter on your home A/C unit. Some have a replaceable filter, and some have a permanent filter that you'll have to remove and clean before re-installing. If you do need to replace it, they are inexpensive and found at any auto parts store. If it's still giving you problems, unfortunately it may be an internal problem that you'll have to take to a transmission specialist. Make sure to find out exactly how much fluid it holds and what type of transmission fluid it needs before you change it.

Could be a dirty oil filter in the transmission with out proper oil flow the pump has difficulty providing the right amount of pressure to allow the up shift. Check to fluid level if it's low add what your owners manual tell's you. Not always but sometimes a back washing the transmission can remove deposits left behind by clutch material's from the valve body intricate maze of travel. This can only be done by a transmission shop that offers this type of service. Most automatic Transmissions failures are caused by neglect long before high millage cause's trouble. A rebuilt transmission may be needed how ever that my over ride the value of the vehicle. I hope you can get your van back up & running as it should.

my best answer would be is to check the condition of its fluid it might need a fluid and FILTER change .

bubbling or foamy? Make sure the van is parked level and warmed up. Check the fluid level and add as necessary.

u have probaly lost reverse but u shold be able to drive forward unless u have lost every gear and not just reverse call taxi r rent a car are buy anew r used car not being funny but a transmission 4 that u could find u a newer ride

Check the transmission fluid.make sure the car is at operating temperature and in park.go to parts store and buy transmission filter kit. automatic transmission works on fluid pressure if it is restricted the tramsmission won't shift right.the fluid and filter are to b changed usually between 40 to 50k miles

For Automatic transmission problem,click the link below:---- Automatic transmission troubleshooting:----

http://howtobyme.blogspot.com/2011/11/automatic-transmission-will-not-go-into.html

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Automatic transmission shift lever issues?-------

http://technoanswers.blogspot.com/2012/01/automatic-transmission-shift-lever-hard.html

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AUTOMATIC TRANSMISSION FLUID LEVEL? --

http://schematicsdiagram.blogspot.com/2011/07/how-to-check-automatic-transmission.html

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AUTOMATIC TRANSMISSION FLUID AND FILTER?

http://schematicsdiagram.blogspot.com/2011/07/how-to-change-automatic-transmission.html

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Transmission fault light on car dash?

http://schematicsdiagram.blogspot.com/2011/12/transmission-fault-light-on-car-dash.html

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Transmission shifting problem?

http://schematicsdiagram.blogspot.com/2012/01/transmission-shifting-problem-on-toyota.html

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Transmission Slips out of 2nd gear?

http://repairhelpcenter.blogspot.in/2012/02/transmission-slips-out-of-2nd-gear.html

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OD light flashing and transmission fluid leaking?

http://repairhelpcenter.blogspot.in/2012/02/od-light-flashing-and-transmission.html

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Why Transmission fluid leaks near radiator?

http://repairhelpcenter.blogspot.in/2012/02/transmission-fluid-leaks-near-radiator.html

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Transmission fluid leaking?

http://technoanswers.blogspot.in/2012/02/ford-windstar-transmission-fluid.html

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****** wont go in reverse?

http://technoanswers.blogspot.in/2012/02/dodge-neon-wont-go-in-reverse.html

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Automatic transmission will not go into reverse?

http://technoanswers.blogspot.in/2012/02/dodge-automatic-transmission-will-not.html

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Transmission is making buzzing noise?

http://technoanswers.blogspot.in/2012/02/transmission-is-making-buzzing-noise.html

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This will help.

Thanks.

CHECK TRANSMISSION FLUID LEVEL FIRST BUT IT SOUND LIKE YOU NEED A FLUID AND FILTER CHANGE IF TRANSMISSION FILTER STOPPED UP TRANSMISSION PUMP CAN DRAW FLUID THROUGH CLOGGED FILTER.WHEN ENGINE AND TRANSMISSION GET HOT FLUID WILL GET HOT AND THIN ENOUGH TRAVEL THROUGH FILTER SO CAR CAN SHIFT INTO OVER DRIVE.DO A FLUID AND FILTER CHANGE SEE WHAT HAPPENS.

LOOK FOR TRANSMISSION FUSE UNDER THE HOOD IN THE FUSE AND RELAY BOX.HAVE VECHICLE CODE SCANNED FIRST TO SEE WHAT TRANSMISSION SHIFT SOLENOID BAD.GUESSING WILL COST YOU.SOME TRANSMISSION SHIFT SOLENOIDS COST $70.00 TO $80.00 BUCKS.

If you have recently changed you Automatic Transmission Fluid (ATF), the wrong type of fluid may have been put in. Incorrect fluid will cause the transmission to shift poorly. Old or dirty transmission fluid can also cause issues with the designed operation . If you can not remember the last time you changed the ATF or have never changed the ATF, see if an ATF change fixes the issues you are experiencing. Consider having the transmission filter changed also. If you continue to have hard shifting after this there may be more serious problems developing that may have to be dealt with.