We own a 2001 Dodge Ram 1500 4x4 with an automatic transmission at low speeds the transmission is shifting from 1st to 2nd gear back and forth and back and forth. Once you get it going fast enough to shift up into 3rd gear it runs fine. It also does not do this in 4 low. The truck is not throwing any scan codes. We replaced the throttle positioning sensor, and it didn't help. We are unsure what to try next. Has anyone else had this proplem, and how was it solved?

Governor pressure controls the 1st and 2nd shifts. After that is the 3 and 4 solenoids. you would need to look at the pressure when driving(takes a scanner). pressure is 20 to 30 PSI from 1st to 2nd, depends on acceleration. After that the pressure will jump to 100+ psi. Did you replace the governor solenoid and sensor? They are on the passenger side of the transmission and sit in a block that detaches from the valve body.

How to adjust 3 speed column shifter - YouTube

? 9:53
https://www.youtube.com/watch?v=2TCHzIvAvRQ
Mar 6, 2014 - Uploaded by luke Fugate
This is a video to show you how to adjust a Three speed on the column to ... It's great not having to wind the engine and transmission just to take off in 2nd or 3rd gear. ... It was ALWAYS getting stuck between 1st and 2nd gear. .... 1977 c10 3 On The Tree ' How to Drive a 3 Speed Column Shift - Duration: ...

Diagnose Automatic Transmission

www.aa1car.com/library/2002/bf90222.htm

All they know is that they put their gear selector in "D" for Drive and their vehicle ... But when internal problems cause the transmission to act up, it takes a fair amount .... In Chrysler three-speed automatics, changing the fluid to ATF+3 can also help ...kickdowns to get the transmission to downshift to 1st from 2nd or 3rd gear.

Manual transmission - Wikipedia, the free encyclopedia

https://en.wikipedia.org/wiki/Manual_transmission

Wikipedia1 Overview; 2 Unsynchronized transmission; 3 Synchronized transmission; 4 Internals.... gear speeds by blipping the throttle when shifting from 2nd into 1st. ... In a synchromesh gearbox, to correctly match the speed of the gear to that of the ... Even in transmissions that do not feature direct drive, it's an advantage for the ...

When do you use the 1,2,3 gears on an automatic car ...

https://www.reddit.com/.../when_do_you_use_the_123_gears_on_..

For car not changing gears it can be shifter assembly issue, or it can also be transmission issue. Get the shifter assembly inspected with ignition OFF.

For more troubleshooting, I suggest you to get the Following help link checked, its complete step by step procedure to inspect gear shift issues: -----

GEAR SHIFT ISSUES

http://alltypesofpartsreplacing.blogspot.com/2012/11/gear-shift-issues.html

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These will help.
Thanks.

the transmittion keeps shifting in & out of gear between 45 & 50 mph it shifts to a higher gear then a lower then higher then lower till I get above 50 mph whats the problem & how to fix it

Could be as simple as low transmission fluid, but it can also be your shift solenoids or gonked up valve body. Star with checking your transmission fluid level. On that vehicle its pretty simple. There should be a yellow dipstick. Vehicle needs to be on and on operating temperature. Gear selector in P or N. Pull the dipstick out and see what it reads.

sounds like filter could be clogged, if it hasn't been changed in a while. you can try to replace throttle position sencer, it is like your old trans kinkenge system, only now, it is elect. it tells trans when to shift, like your speed sencer on trans doe's. both can make it act like it is.

yes sounds like the one of your transmission shift solenoids is out or going out on you check them out see if can see if wires loose or if they are faulty try get a diagram see if can find out which solenoid controls 1 and 2 gear theres 4 solenoids total i believe but this is your problem

Most likely the second gear section of the transmission has gone bad. There are 3 or 4 different gear sections or assemblies in an automatic transmission, when they go bad, they go bad.

mine does too on a 1997 dodge ram 5.9l automatic tranny from first to second it is jerking and jumping and then finally shifts into second i just had the tranny rebuilt probably 20 miles ago so as soon as you figure out the problem let me know asap my number is 2282432853