1990 Pontiac Bonneville Q&A

1990 Pontiac Bonneville Question: What causes backfire through air flow system

changed mass air flow and crank sensor won't stay running any more tried catalytic converter didnt work -
Answer 1
TAKE IT IN AND HAVE IT DIAG BY A MECH YOU ARE WASTING $ -
Comment 1
alright i figured as much my wife has been sayin the same thing but its no fun listening to her that would be to easy lol -