I have a vz crewman ssz v8. When it warms up the idle drops really low to a point where its bearly running. Does any one know what could be going on. I looked threw some other post and thought it could be an oxygen sensor playing up.

Also are all the holden dealers able to do computer updates on these cars. Is there a prefered one to go for. Only realy interested in low to mid range power and fuel economy as I do alot of towing and my ute seems kinda sluggish under 2000rpm which is where it sits most of the time.

Any info will be appreciated