Garage Cabinets, Garage Storage, and Garage Organization

I have a ford crown victoria for the past 9 months, been in the shop now on its 4th time. Seems to have "something" wrong with gearbox/transmission, but nobody knows how to fix it (computer doesn't "read" anything wrong with it). I'm sorry, but idling at 2400 rpms and going up to 5,000 rpms when simply accelerating (not even "gunning" it) is a little obscene! It has averaged 18L/100kms (or 13.1 mpg or 15.7 imperial mpg). any thought?

Visec, your crown victoria is defenatly idling too high...