T tj d New member Sep 10, 2009 #1 i was washing my car and i i stuck my finger on the in exhaust pipe and their was black residue on my finger what is it the 02 censors are making the check engine light come on would that be the problem
i was washing my car and i i stuck my finger on the in exhaust pipe and their was black residue on my finger what is it the 02 censors are making the check engine light come on would that be the problem
