| 1989 cadillac deville service engine light on??
hello, i am wondering what can it be when my service engine light comes on after an steady speed of around 65-70 on highway, it only pops up if i drive fast i believe well only happen on highway for me...i kno my cat converter is dieing due to hitting it and it rattles and today i experience the freakin rotten egg smell for the first time so sad can it be my o2 sensor and my cat converter? cus i also got very bad milage (9 mpg) i got 152000 miles on my car |