2003 Mitsubishi Shogun stalls when in drive or reverse

Try this relearn idle speed process .

" I have this information for the gdi. I'm not sure if it will help but

11. Start engine, check any fuel leakage and if the engine idling speed is not stable due to reset of the
learning value, perform the following processes.
a. Warm up engine until the coolant temperature becomes more than 85 degrees Celsius.
b. Turn the IG key in the “Lock (OFF)” position.
c. Wait 10 seconds then start engine again and keep idling for 10 minutes in the conditions of A/T
shift in the P-position, the blower fan is off and the engine coolant temperature is more than 83
degrees Celsius.
d. Once stop engine and restart it and keep idling for 10 minutes in the conditions of A/T shift in
the P-position, the blower fan is on in the high position, A/C is on at max cool position, all the
windows are open and the engine coolant temperature is more than 83 degrees Celsius.
e. Repeat the process “d” again.
[Notes]
- If the ambient temperature is more than 20 degrees Celsius and the A/C compressor is
working all the time during the process “d”, the process “e” can be skipped.
- If the engine stalls at the changing timing between the lean mode to the stoichiometric
mode, clean up the throttle valve area and perform the above full processes. "

Idle speed is fine. Switched cam sensor and clean throttle body.It seems to drive when cold and then it starts to cut out but only when drive is engaged.

Can you scan it for fault codes ?

See if this helps

https://www.pajero.guru/how-to-read-check-engine-light-without-scanner-3-2-di-d/

No info from fault codes. Mechanics say it’s fuel pump but it drives in the morning when cold and when engine warms up it starts to cut out then starts again and revs fine but then cuts out once d is engaged. Maybe pump is dying ? Or is it some hidden problem. I was trying to jump start old landrover a week before and ran down battery. So wondering if I damaged something electrical .

I have replaced high pressure pump and connected all electrics.
Starts with easy start in throttle body but does not seem to be getting diesel even though when you open injector pipe diesel comes out ? Any ideas