I have a 98 Cavalier that doesn't seem to be getting very good gas mileage, I had it in twice to the dealer ,they checked it all over and scanned it but found no problem's. I took it out for a run and burned about a quarter tank only went 110 km highway. A lot worse in the city. ( No leaks)
Check engine light on? If you can get you hands on a tech 2 that would be nice. Check oxegen sensor voltage, injector pulse width, stuff like that. migth have a stuck injector too..
Speed costs... How fast ya wanna go??
<a href="http://mywebpages.comcast.net/pj1987">My old cars</a>
No engine light on, and i think the rest would have shown up in the diagnostic test they did,but thanks