Footloose replied:

I do hope you aren't offended by my smartass comment
If it were my vehicle I'd go on a diet ! :))))))

Seriously, sounds like you have the bone pointed in the right direction. Also might be worthwhile to check any wiring looms that flex when weight is applied.

Member - Howard (ACT) replied:

Pete,
if its the 4.5 litre petro the in line fuel filter is on the passenger side of the engine just under the inlet manifild, its a metal one.

there isnt any after market wiring running under the seat thats causing a short is there

hopre you sort it our
cheers
Howard

Member - DOZER replied:

Hi
Start with looking at the fuse box on the drivers side......also look at the black pipe that goes to the moor from the filter...they crack around the bellows and air leans out the mix at idle....dont know why sitting in drivers seat makes a difference....
02 sensor is there under the drivers feet....again cant see how it would change anything by sitting on the seat...what about if you change drivers..

Patrol22 (Queanbeyan replied:

Thanks everyone - will check out the suggestions offered. Changing drivers doesn't make a difference. Simply need to add weight to the RHS of vehicle for it to start coughing and sputtering - will change the fuel filter and note the change. Any futher ideas will be greatly appreciated.

franksy replied:

this might sound a bit wierd ,try jacking up the front axle 'drivers side' maybe a wire earthing out or maybe a faulty kll switch

Patrol22 (Queanbeyan replied:

Thanks everyone - will give it a good check over and change the fuel filter and see how it goes. Will post the results.

Patrol22 (Queanbeyan replied:

Thanks all - solved the problem. There was a small split in the main air pipe from the air filter box - couple of metres of duct tape and the problem is fixed. New air pipe is $180 and has to be ordered in.
Cheers
Pete