Van is not shifting into overdrive. speedometer does not work at the same time. Have had both work but when speed drops to 35mph, the transmission drops out of overdrive and wont shift, also speedometer stops working. Have changed trani filter, also found & fixed fusible link wire that was melted. Been told a speed sensor needs replaced. Which sensor controls speedometer? When connected to comp no codes have shown but was shifting & speedometer was working at that time.
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: automatic 3 speed transmission wont shift out of first gear
that is what they consider safe mode for those transmissions, they are a very smart electronic transmission it does that so you dont ruin the trans.
It has detected a problem and you must take it to a tech and have the codes pulled, could be as simple as a sensor or solenoid pack
SOURCE: transmission wont shift on 93 plymouth voyager
Do you know if you have a 3 speed trans or a 4 speed trans? If it is a 4 speed , the (D) on the shift indicator will have a box around it. I need to know which transmission you have, then I can help.
SOURCE: 1999 Grand Voyager transmission not shifting into high gear
Do yourself a favor & get it scanned at transmission shop, or dealer & fixed as needed,(within reason) . Delaying it could cost lots of money. A rebuilt is about $1500-$2000.
SOURCE: the transmission will not shift gears and the
Hi:
This same thing happened to my daughter,s car, and it ended up being fixed with a transmission speed sensor. This sensor not only runs the speedometer, it helps tell the transmission when to shift too.
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