2000 Plymouth voyager, 3.3 liter, 41te 4-speed auto trans. I was going up a hill and it downshifted to 3rd and seemed to jump out of gear. A code came up that pointed to speed sensors. I replaced them, changed trans fluid. It will go into gear and shift to 2nd fine, but when it tries to shift to 3rd it slips, makes a chattering noise and goes into limp mode.

Marvin

• 85242 Answers
• Posted on Oct 20, 2008

SOURCE: 98 PLYMOUTH GRAND VOYAGER WONT START - BLOWS ENG FUSE - HELP

You have a shorted engine harness, this is not common but it does happen, heat and engine movement cause damage to the harness, this is most common on hi miler cars and vans, the only way to fix it is to start by looking anywhere the harness rubs, that is where the damage occurs.

SOURCE: 96 plymouth voyager no shift

you say the fluid looks good... that's great.
now next time your out drive for about ten good minuetes long enough for the transmission to get nice and warm and then pull over to nice level ground and with the vehicle in park check the fluid again. it's kind of hard to read because it always has a lot of bubbles on it and stuff. but it may be low on fluid.. good-luck ray

SOURCE: 1998 Plymouth Voyager does not shift to 3rd gear when driving,3.3

It's in limp home mode. You'll have to check wire connections and electronic controls. If it has a vacuum modulator you can remove it and look for trans fluid on the vacuum hose side (meaning ruptured diaphram). Double check the parts you replaced as well, especially if they were used parts. My dad went through three speed sensors in one year on his Caravan. You should drop the pan after checking other components. It could be a bad relay, shorted module or wire. The three speed transmissions are much more reliable than the four speed overdrive transmissions but with age and miles things can go wrong and parts will wear out.

SOURCE: serpentine belt and tensioner replacement 1999

try autozone.com to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you

SOURCE: Starter Motor Replacement

Try the autozone.com website. Go there and register. It doesn't cost anything and will give you access to an online repair manual for your van. The procedures for changing the starter can be found there. Hope this helps and best wishes.