1990 Oldsmobile Cutlass Supreme Q&A

1990 Oldsmobile Cutlass Supreme Question: not a 1990 its a 1989

iHAVE POPPING OUT THE AIR INTAKE AND NO POWER ON A FLAT SERFACE GOES GOOD BUT UNDER A LOAD ON A HILL 26 MPH TOPS ?????? -
Answer 1
Sounds like your Catalytic Converter may have gone bad, which can be problem on this vintage GM cars. They fail and plug up. Have a shop do a back pressure check. that will answer this question. Best of Luck! -
Comment 1
thanks dandd -
Comment 2
crossed wires and o2 sencer just had this problem popping out the throddel body -
Comment 3
our 1990 Cutlass acted the same way. It needed a new catalytic converter. -
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