ok..thanx,corrected the po121 code...but there is a po103 code..maf sensor circuit high input code..is maf bad

Question

po 103 maf sensor high input.does it need to be cleaned or changed?? thanx

ok...1998 buick regal....3.8l..i got it running but it still hard idle,may have ruined it by not taking it off before i sprayed throotle cleaner.,also have po1507 code..IAC low voltage..maybe vaccum leak??

Answer 1

use maf cleaner to clean it dont use throttle body or carb cleaner they will ruin it thain clear codes and re test

Answer 2

One can provide better answers if the year , make, model and engine size were given.