Transmission does not shift

This problem had to replace the relay. I got one for $32.00 never had the problem again.

I have a 2004 Dakota 2WD with V6, Automatic Trans and 13K on the odometer.

The transmission usually starts off normal, going through all the gears but some miles down the road the tach starts to drift higher as the engine speeds up. Example: On cruise at 50 mph, on level ground, the tach should show 1400 rpm. After a few miles, however, it will, for no apparent reason, start to drift higher, up to 2000 rpm. If I shift the gear lever into 2 and back to 3 the tack will quickly come back down to 1400 and stay there for a few miles before drifting up again.

The dealer said there was a diagnostic code indicating a problem with the transmission but they didn't believe it so they attempted to correct the problem by re-booting the computer. That didn't solve the problem so I took it back. Next time they told me that this behavior is normal and there is nothing wrong with the transmission.

I can't accept this diagnosis as I know it is not normal. Can you tell me what the cause is or how I can go about getting it resolved?

I will be pleased to make a donation if I get a meaningful solution to the problem

The trucks transmission does not shift until the RPM's are near 4000. Is this an easy fix or do I need a new transmission?

I have a 1998 Dakota, and I was having the same problem. I had the transmission fluid and filter changed and it has been fine ever since. I also had the same problem with a Toyota 4-Runner a few years back and changing the fluid was the simple fix for that vehical as well.

If you have not had it changed then based on the milage you should. Most oil change places can change it for you while you wait.

Take Care!

Transmission problem
2002 Dodge Dakota 6 cyl Two Wheel Drive Automatic

My truck is not down shifting and everyone has said it is a modulator on the transmission. Where is it located and do you have a diagram?

I have a 2002 Dakota 3.9, 42RE trans. Truck will not up or down shift. Had codes P1756 & P0748. After replacing the governor pressure solenoid and transducer code P1756 cleared. Code P0748 is still active. The truck will shift fine until you make a stop then it will not shift automatically. But if you turn the truck off and restart it, it will shift fine even after making stops. It worked fine during the five mile trip I took. Why does restarting clear up the problem? Of course you will have to do this each time you use the truck. All wiring and connections look good.

Thank you.

When I replaced the sensor and transducer I saw no wire issues. I did pull all other trans related connections and checked them, all looked good but cleaned just in case. Found no external wire issues. I understand restarting resets everything but if there is a wiring or connection problem restarting doesn't repair the problem so where did it go. Resetting doesn't repair a bad connection or shorted wire? I'm confused!

I will go through everything again, the only thing I can't check by just looking at it is the PCM other than the connections. Other than the three main connection on the PCM is there another connection I'm missing?

Thank you for your help.

If I start out of driveway in Drive, truck usually shifts all the way through gears until I have to come to a stop. When I go to accelerate forward again, in Drive, the transmission has not downshifted to first gear and is starting out in Drive instead. I have to manually pull shift lever to first or second and transmission will go forward in second gear (not first). Once I get up speed I manually shift to drive and it kind of jumps forward into drive. It will not shift to overdrive.
If I stop and turn the ignition switch off and count to 10 seconds, and restart the engine the transmission resets itself and shifts fine, until I stop again at a red light, or stop for traffic flow. I have changed the filter and fluid, and pan magnet had no metal shavings at all, and old fluid was not gritty. I have driven truck 200 miles since fluid change.

Last resort I will pull pan again and pay more attention to the wiring going to the eight pin connector. Thank you.

02 dodge dakota slt regular cab
Does not shift to Park after a drive, it goes in park but indicator shows on reverse, Tech says need to change transmission fluid, I think its linkage adjustment needed. Please advise.
Thanks