hey guys,
just a quick question, ive got a 1997 xh 4.0efi auto on gas, and for some reason when i rev the car, particularly in neutral and park, it does not settle down to idle. it is a bit of a worry as sometime i wont even have to touch the throttle and when i flick it from drive to neutral at the lights it revs up to about 2 grand and sits there. its not a sticky throttle cable or anything like that, as i have tested it directly from the throttle body. it does it on petrol and gas. any ideas on what could be the reason would be greatly appreciated

thanks.
jacob

Check out this page:

http://www.fueltech.com.au/trade_vehicletips.html

Scroll down thru their little articles - there's one there about Falcon idle flaring - don't know if it's definitely your issue tho.