Question about 2000 Plymouth Voyager
1998 Plymouth voyager 3.3L 3 speed automatic tranny does not shift to 3rd gear when driving.I put it on a scan tool and it tells me it has a transmission control system malfunction and gear 3 ratio is incorrect.Would that mean that the modulator needs replacing?I already replaced the tranny control module and speed sensor.
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.
Posted on Feb 07, 2009
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