How to trick a 1997 automatic

[Jeff jeeps]

I need to trick the 97 4.0 jeep pcm to think the automatic transmission is still there. Put a ax15 in and took the auto out and changed the flywheel. Its throwing codes for the torque converter circuit and shift cylinoid 

[BeatCJ]

Probably work better to find a manual PCM. I don't know the cost, so take that for what it's worth.

[Jeff jeeps]

Do you know if a wrangler pcm will work 

[Dzimm]

Just take the CEL bulb out and you'll never know!  Only proper fix is to swap the PCM, not really a way to trick it to think the trans is there and working unless you were an electrical engineer and came up with some circuitry to do it.

[BeatCJ]

I don't.

 

Do you have access to one?

[yxmj]

A wrangler pcm (YJ) will work (with some tweaking)

( you can use one for both 2,5 and 4.0......Just leave off  injector 5 and 6 if you have a 2.5)

you might have to get the correct CPS

[Sir Sam]

A YJ pcm won’t work in a 97+ XJ. 
 

ecus can be reflashed to a different PN in some cases. I had a customer in France needing a non security pcm for a 97xj, so we had a federal ECU reflashed to the California/export PN and to match his vin. 

[omega_rugal]

get a manual ECU or ignore the light...