My mitsubish chariot grandis 1997 has rough idling and does not exceed 2000 revs when travelling. it also does not exceed gear number 2 when u accelerate more. what could be the problem?

Hi blinking neutral light means there is a transmission problem.First do a diagnosis of the tcm

Sounds like a high voltage ark through either through a crack in the distributor, or through a crack in the wires to it or near one of the spark plug boots. It probably will be visible as a blue spark at night. Otherwise you might just replace the cap and wires!

the wrecking yard is a possibility

This model is not sold in the USA so we have no manuals for it. Sorry

the ecm does not have a battery to keep the CPU memory alive so by disconnecting the battery for such a long period , the cpu program is corrupted
try using a scan tool to reset the program

go online buy it have it shipped to you

what color smoke, white is water, blue is oil, black is fuel, gray is brakefluid

mitsubishi grandis 1999 low fuel, it starts but cut out

its your idle control valve

Breaking up like you described can be related to a condition where the distributor drive gear is wearing out.
Had you checked it for rotor tip travel (about 5mm of loose travel is the max) or had the distributor indexed? The indexing procedure appears to be similar to an ignition timing adjustment but isn't the same.
Chrysler TSB 18-08-93 Rev A describes a condition often seen on the 1992-1993 3.9 engine. The distributor drive gear wears out prematurely and then wallows out the support bushing in the engine block. Your oil pump is driven by the same gear through the distributor shaft, so cold engine operation often is worse from the higher viscosity of the oil and the resulting load it places on the worn parts.
The distributor index slips to the retarded zone (trails what it should be) just from the gear wear. Adding in the worn bushing and chain stretch can put the distributor in a position where ignition cross-firing can occur and the switch plate (cam sensor) within the distributor can drop out-of-sync with the crank sensor.
If you haven't done so, check this out for me. Remove the distributor cap and twist the rotor clockwise and counter-clockwise. The total tip travel should not exceed 5mm, which is just about 1/8". Even if it exceeds this, an adjustment/ indexing of the distributor will get it running right again if only for a short while.