He may be referring to resetting the computer after changing out those parts. When you reset it, it takes like 100 miles or so to "relearn". So that means don't be flooring it or anything. Just drive it normally for awhile. But I'm not sure if that's your issue... You sure someone isn't siphoning gas out of your tank? I'm being serious, with gas at $4+ per gallon, it is a reality that people do this sort of thing in some areas.

 

Unfortunately yes I'm sure, I got half a tank and was driving around looking for my dog...had to stop and get more before I made it home. Now when I start it at idle it says 0 MPG lol. Guess I'll just have to bite the bullet and find a shop.

 

Well at idle you are getting 0 mpg. Your burning gas but not moving. A good shop will be able to hook it up to a computer and see if all the sensors are reading what they are supposed to

 

That's what the digital readout says lol

Got an appointment Monday afternoon to drop it off and see what they come up with.