1998.5 Dodge Ram with 24valve Cummins...When swapping a bad ecm with a known working ecm, must i also swap pcm to match?

Swapping the transmission in a vehicle can be a complex and time-consuming task, especially if you are changing from an automatic to a manual transmission. Here are a few things to consider when performing this swap on a 1998 Dodge Ram with a 360 engine:

1. Make sure you have all the necessary parts and tools for the swap, including a manual transmission, a flywheel, a clutch, a pedal assembly, and any other components that may be required.
2. Follow a reliable repair manual or instructional guide for step-by-step instructions on how to complete the swap. It is important to follow the procedures carefully to ensure that the swap is done safely and correctly.
3. Have a professional mechanic check and adjust the transmission linkage, drivetrain, and other components after the swap to ensure that everything is functioning properly.
4. Consider updating the engine control module (ECM) or other related components to ensure that they are compatible with the manual transmission.

no engine told at all ,!
USA car or if not where, answering for USA spec cars, me.
2000-- 2.7,3.3, 3..5L
2008-- 2.4., 2.7 and 3.5L
or tell VIN code the engine code is encoded in the VIN USA, (ALL)
we can not guess engines
but gee ask any auto wreckers this, hard question , the can answer.
there are 3 fits.
1: fits physically in bay, and also fits the trans-axle.
2: fits Phy, if mods are done. (minor to major)
3: the PCM likes it (many will not)

there is no way to go farther here, for sure answering all 4 ways.
or go to any www, rebuilder for engines and look there.
it tells you there if you engine bad has match on any other car.
swaps also have depth
short block
long block
or full engine swaps, including all sensors , and actuators, or injectors an more. some engine have PCM controls alternator will not swap.
this is not 1960 with a 1 wire ignition, gone now.
for sure match displacement. of engine. not told
of topic calls this one is the most complex today,
why not even ask Dodge this?
or google like this, (dodge xyz engine history and evolution)
you'd be amazed what you can learn with 1 hours work.
just you and 2 fingers.

Is it possible that you did not swap the ECM module along with the engine

Swap and connect. *****Make sure you disconnect the battery first******

Check the ASD relay in the fuse box. Swap it with the starting relay. If the engine fails to roll over. Thats your problem. If not, check and see if your fuel injector connectors have voltage to them if not its a bad PCM. Hope this helps.

your code is PCM/ECM power input signal intermittent. this is ussually a sign of a bad connection whether it be in a connector or a short or brake in a wire.

All three of those refer to the ecm. 98 to 02 cummins have a vp44 inj pump with the ecm built inside. These are known to have problems,specifically due to poor lift pump pressure. The pump usually does not give any warnings they just quite. HOPE THIS HELPS

high voltage is an indication something is not plugged in or plugged in wrong. You will need to test the harness to see if the required voltage supply is present, connector unplugged, if not then your going to have to determine if the siganl comes from the PCM or the fuse block. If its the PCM you may have a bad PCM. Same thing for the ground side. Now if the reference signal and ground are good you could have a sensor issue but I doubt this because you have high voltage on three components. This tells me that three component signals are not getting back to the PCM. This is why it sets the codes. With all the work you just did I suspect you didnt but the wiring back the way it was. Sometimes people take the ground wire off between the engine and and body because its in the way and don't reinstall it. Or don't tighten it enough. With todays electronics there simple mistakes cause unforeseen issues.

P0523 means the Oil pressure voltage to high. Your Oil pressure sensor may need to be replaced. P1682 means your charging system is to low. Your voltage regulator may be going bad or the whole alternator. p1693 means a Diagnostic trouble code (DTC) has been detected in the ECM or PCM which is related to the above DTC P0XXX codes. Good luck and hope this helps. Keep me posted, be glad to help

did you use the existing ecm or the one that came on the new motor. probably need to program the wcm. transfer secret key also. sounds like the problem to me. if the vin number in the ecm/pcm/wcm dont match the truck wont stay running