My 1997 S10 has all of a sudden take a nose dive with gas mileage. its a vortec 4.3L ZR2 package 4x4 ext cab. i know they don't get the best MPG ever but i should be getting better than 10 mpg city. the only thing i did was clean the throttle body 2 weeks ago. it was gummed up so bad, i figured i would be getting better MPG or at least better throttle response but it is the opposite here. no check engine light or anything like that. i am sure i put everything back the way it was before the cleaning. any ideas?
thanks
ricky
thanks
ricky