I've had this problem for about two weeks now, but it seems to be getting progressively worse. At a highway speed of 55-70, obviously I would like to be in overdrive instead of accelerating in a lower gear, the problem is that my truck will shift back out of overdrive every time my foot moves on or off of the pedal even the smallest amount due to the fact that the LIE is not a smooth expressway. Sometimes it will continuously shift into and out of overdrive back forth within seconds of each other. Is this a transmission problem or a small fix? Thanks!

 

which transmission are we working on here?? if you dont know thats fine tell us which engine you have and the year and we will help you figure it out.

 

2000 4.7

 

you have the 45rfe in your truck it is an electronically controlled transmission, the first thing i would try is to see if it is a computer bug, reset the TCM (same procedure as resetting the PCM, this will reset the controller to factory default settings) If this takes care of it then something is off with your driving style to teach the computer wrong, if that doesnt fix it then i the next step would be the OD control system sensors or solenoid

to reset the controll modules, remove negative terminal of battery, hold key to start for 30 seconds and release, turn key off and remove from ignition, reattach negative battery terminal and start the truck.

 

Have you checked the fluid level? Is the check engine light on? If these are good, maybe you are feeling the torque converter locking and unlocking lock up. Or maybe you have a bad TPS sensor.

 

I will try your advice tomorrow and definitely let you know how it goes. What I do know now is that I have not checked the fluid recently but I don't have any lights on the dash

 

Where are these? Are they the solenoid and pressure sender in the transmission under the pan?

I haven't heard of an OD control sensor yet.

My Durango has a similar issue, but only if I really goose it to pass someone. Almost like it's shifting two gears instead of one. I can get it to do either but it's almost all affected by where I bury the pedal...

...which leads me to believe it's a TPS issue.

 

they're talking about a completely different transmission. The 5.2 and 5.9 have the 44re and 46re respectively (the 46 is basically a heavy duty 44) and have nothing in common really with the 45rfe (with the 4.7) that they're talking about.

have you tried adjusting your tv cable?

 

Hi , I have the same problem but it is a 05 Dodge P/U 4x4 diesel. When a shop worked on it they showed me a shaft that had very small oil flow holes and said the oil flow was not enough to the overdrive unit! They put in a shaft with bigger holed. Ciao capy-mastermates

 

I agree here, when the TC locks and unlocks it gives a similar feel as shifting gears. If you give it a little more gas fairly fast (but not enough to cause it to downshift) you'l feel it unlock, and when you're cruising at a speed, then let off the gas, it will unlock to allow the truck to coast without the engine dragging you down.