My chrysler voyager 2003 just lost power when on the road and stopped responding to gear shifting. The engine is running fine. There is no engine light. It just doesn't move nor respond to gear shift. Is it a sensor or transmission problem? It has 48,000 miles.

Question edited for clarity. 'year make model' first, 'want' and 'won't' are not interchangeable words. 'won't' = 'will not'.
Question moved to model category.

Help and videos in the link

https://www.google.com/search?q=2002+Chrysler+Voyager+3.3.+Transmission+won%27t+shift+gears+from+drive

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Its a big job gave you and example for neon

run fault codes and check for TCM problem . Change the fluid and clean the filter. Have a pressure test done on the box to check for internal mechanical problems. While the pan is off have the bands and clutch pack adjustment checked.

Not sure I am following your story.
Are you saying the transmission is slipping and therefore the RPM is high even tho the road speed is not ?
Or is the transmission not upshifting to the next gear at a normal road speed ?
Is the check engine light on ?

Van was running fine,just lost power and just has the sound of trying to turnover but will not start.

PCM going bad. real common

The geabox fluid needs changing, if the gear changes seem jerky changing up and down, the gearbox needs to be refurbished.

John, this sounds like a valve hanging up in the valve body. The car shifts when the govenor pressure overcomes throttle valve pressure in this valve body.

What is the condition of the fluid? Is it at all dark or grey, does it smell burnt? It should be a nice light pink. If not, have the fluild and filter for the trans changed. This may take care of the problem.

If the oil is really burnt, you are at the end of the life of the clutches and you are looking at a complete trans rebuild. If the oil is ok, a trans shop should be able to take just the valve body down, clean it and eliminate the problem without overhauling the entire transmission

good luck

Check wire to transmission it sounds like a ground out when you hit a bump ,

Hello,Bharper,,
unfortunately it sounds like it's time for a new transmission.. sorry..