I have a 1997 Plymouth Grand Voyager. We just replaced the battery and the alternator. The battery and check engine lights are both on and the battery isn't charging correctly. It checks at 12.5 when running at the battery terminals, but should be between 13-15. The car kicks a little shifting from 2-3rd gear, and it has codes p0700 and p0740 showing. What do you think it could be?

SOURCE: 1997 Plymouth Grand Voyager won't start

there is a starter relay in the relay box. check for power going to the relay box , also have your check for voltage going to the starter . check for ing feed at the small wire also . before replacing any more parts , i would think that all off this was done the frist 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: 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.

SOURCE: I have a 2000 plymouth voyager with error codes

speed sensor most likely this transmission runs 2 an input and an output. if your speedometer is fluctuating or not working it would be output problem if not probably an input speed sensor. these sensors can be purchased for around 40$ i believe at your local dodge/chrysler dealer.

replacement is fairly easy. open hood remove air cleaner locate the sensor on the transmission. in put is closet to engine. unplug sensor remove by unscrewing it. reverse for installation. disconnect battery for 2 min to clear codes and road test

SOURCE: My 1999 dodge caravan with 3.3 liters engine shows

both codes are transmission related codes,you need to have a transmission shop run a check on the curcuits