Nissan Largo Friends

HI MY LARGO RUNS LOVELY STARTS OK BUT THE IDLE IS ERATIC AND SOMETIMS WHEN I SELECT DRIVE OR REVERS IT STALLS CAN ANY ONE HELP PLEASE

I think there are two types of diesel pumps think one is fly(drive) by wire one standard cable. Have a look on here for resistor mod think some people fixed similar issues. Could be an issue with the fuel quantity adjuster. There is also a mod where you dent something that fixes some diesel pump issues. They normally idle around 750rpm and reasonably stable.