I need to to know what makes the overdrive work is there a switch or senssor because you put it overdrive it will not take off you can put it in drive it will shift through all the grears & shift into overdrive & it works but if you stop without shifting out of overdrive it stays in overdrive & you have to go to park & then drive to get it to go again & that is on both transmissions
The problem is most likely not in the transmission. Since it is doing the same thing with both of them. I would start with checking speed sensor circuit. The speed sensor send signal to the processor and the processor in turn controls shift point etc. You need a really good scanner and monitor PIDS. Watch what the speed sensor is reading and look at fuel trim to make sure the vehicle is seeing what the vehicle is really doing. Your OBD is very primitive compared to todays OBDII, which holds and keeps information. Therefore you have to monitor while driving and situation happens. If you can, try a KNOWN GOOD PCM first. However, don't go out and buy a new one without verifying that it is the PCM
SOURCE: won't shift into overdrive
these cars are a 4 speed auto
it you here the car change 4 times then it is going in to od
best way to try this is by following
if it dose not work let me know and i will try my best to help you
ricko
SOURCE: f150 transmission neutralizes when shifts to overdrive
I have that exact same truck and transmission and My Transmission did the exact same thing about a year ago and there was some kind of snap ring inside the transmission that broke. I originally thought it had to be an electirical problem because the truck shifted fine until OD or if i turned OD off. The 4r70w is a light transmission and i would suggest you have a shift kit put in and they make a heavier kit to beef it up.. Sorry its probably not the new you were looking for.
SOURCE: How do you remove the gear shift lever on a 93 ford ranger?
many of these trucks have a mazda trans in them, to remove these shifters you will need to remove the 4 phillips head screws from the corners of the trim around the shifter boot and pull it up out of your way. it's not necessary to remove the boot from the shifter, just lift it up for access to the top of the trans. at the base of the shifter on the top of the trans you will see a plate attached with torx head screws. remove all but 2 of them, now make sure the trans is in neutral and remove the last 2 screws and pull the shifter straight up. the shifter is now out leaving a big hole open on the top of the trans for dirt to fal into so put a wrag in it or screw a piece of cardboard to it. installation is the reverse. good luck
SOURCE: Ford Escape Automatic Only Goes Into 1st Gear Manually
it sound like you have a vacum leak or your shifter cable may need adjusted
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