Car will start right up but will not go into gear

magnum? a RAM 1500 pickup, i guess magnum is engine jargon?
well it is not really stuck in reverse (well unless is. blush)
but 99%^ of the time that means the clutch is 100% dead.
learn this trick
have a buddy wiggle the truck on say flat garage floor, (no brakes set)
jug it forward and reverse the whole car and you wiggle the shift lever to N
see it does N.
the box has hard cut gears and synchro dogs. and if under pressure huge
the shifter level sticks. all manuals do that, with a dead clutch.
can do it.
do not gorrilla the shift lever or wreck the gear dog forks inside. box.
fix the clutch.

the clutch actuator is dead,. never replace any clutch first
gee my 4wd is 15 hard hours labor to that and I never do , unless MUST/
the best plan on any 22 year old car/clutch is a
new master cylinder and slave kit. first
and learn now to bleed, clutch lines, that are a horror to do .
ok? the fluid in the lines run up/down verically
and the air bubble float up,. making bleeding super hard and confusing to many
. there are tools that make this easy , Pressure bleeding kits.

https://www.rockauto.com/en/catalog/dodge,2001,ram+1500+pickup,3.9l+v6,1366578,transmission-manual,clutch+master+&+slave+cylinder+assembly,10290


we make sure this is working first. 100% full stroke or the clutch is useless.
and locked up fully engaged.
at the least it must be bled fully. off all air.

There could be several reasons why your 2005 Dodge Magnum is experiencing problems with shifting from second to third gear and then suddenly hitting reverse, including:

1. Transmission Fluid Level: Low transmission fluid level can cause erratic shifting, slipping, or stalling in your vehicle. Make sure to check your transmission fluid level and add if necessary.
2. Shift Solenoid: A faulty shift solenoid can cause problems with shifting in your transmission. The solenoids control the flow of transmission fluid through the valve body, which controls the shifting of gears. If the shift solenoid is failing or has failed, it can cause the transmission to slip, shift erratically, or get stuck in a gear.
3. Transmission Pump: The transmission pump is responsible for pumping transmission fluid through the transmission and to the torque converter. If the pump is failing, it may not be able to pump fluid properly, leading to problems with shifting and slippage.
4. Valve Body: The valve body controls the flow of transmission fluid through the transmission and directs the shifting of gears. If the valve body is failing, it can cause the transmission to shift erratically or get stuck in a gear.
5. Transmission Control Module (TCM): The TCM is responsible for controlling the transmission's shifting and overall performance. If the TCM is failing, it can cause the transmission to shift erratically or get stuck in a gear.

It's best to have a qualified mechanic diagnose and repair the issue as they will have the necessary tools and expertise to properly diagnose and fix the issue.

LOW FLUID WILL CAUSE THE CLUTCHES INSIDE THE TRANS TO BURN. IF THE RPMS GO UP AND THE CAR DOESNT WANT TO MOVE IN DRIVE SADLY ITS TIME FOR A TRANS REBUILD

if it is the one with the mercedes transmission,chyrsler calls NAG1,you brake switch is more than likely bad.It does more than show the lights.Also if you can acess shifter area stick and pencil easer end ,below shifter at base where shift points are wrote.And press a little level to move shifter.

EASY ONE.... Your VSS (Vehicle SPEED SENSOR) stopped working and it is this Sensor that gives the PCM/ECM the information to change gears. Once you change your VSS, and get it working, the Transmission will start working again...

I am Assuming that the Transmission stopped working at the same time the Speedometer did? Is that right?

If it is, then this is a easy fix. 1 bolt and one Wire Connector and DONE....

This is what you should do.... PRAY that it is low on fluid. If not, then there are a few questions that I need to ask

a. When you Shift, does the handle go to each gear?
b. Can you feel the Detent on each gear?
c. If the Cable Broke... Easy Fix
d. If your car goes into each gear but does not move... MONEY $$$

To correctly answer your question, I need more information.. Is it not shifting gear when moving or Won't allow you to select gears?

Doesn't sound too good. Take the car to a transmission shop and have them scan it and give you an estimate. Then, have the same thing done at two more shops. See if they all come up with the same ideas. www.AAMCO.com is your best bet. Very honest and hard working people. Car Care Service locations Center Locator AAMCO

fill your tranny fluid or get rebuilt tranny

"The shift pattern is a little different, with reverse starting to the left of first, in the German (Getrag in this case) pattern rather than the "reverse-in-sixth" Japanese pattern. It's nearly always easy to find the right gear, though sometimes reverse can be tricky (presumably this gets easier with time)." from a review I found , hope it helps. I suspect reverse is up and to the far left R 1 3
I__I__I
I I
2 4

There should be a little switch under the gear stick in your car.If you can turn that switch to a position where it will not functioning that will fix your problem.