Was wondering if anyone had this issue and found a solution or could help with a solution..
Several months ago i drove up to Broken Hill and found when i got there it was running a little rough in idle and ever since it has been running that way but when i put it under load like up a hill it runs smoothly even when i put the aircon on and the compressor engages it seems to run better..
I will be connecting a elm327 on and checking the engine a bit later and might put the log up later to see what others think.but in the mean time want to some help finding what might be the issue.

When were the coils last replaced?

They were replaced several years ago.. i know last time i had an issue with them the vehicle was missing under load but it not happening this time it only happening when idling.

If it only idles rough and is fine under acceleration check the pcv valve on the cam cover, the guts may have fallen out creating larger air bypass.

Checked that pulled it out and everything still inside the valve..thx for the suggestion anyway

when was the last time the coils were checked?

long time ago..not sure how to check if they are faulty or not..taking it to auto masters to see what they find, might even get them to replace the intake manifold gasket since i can't (due to injury) was quoted 260 for that..

It ended up being the intake manifold casket by the looks of it...it still has a very slight misfire in drive on idle and park..but if i put it in neutral the missing is noticeable. They replaced the spark plugs as well and i will be changing the coils at later stage..
Spark plugs and inlet manifold caskets with labor cost $500 at Auto masters...