DaleGrib
Dedicated LVC Member
I am gonna test for a vacuum leak for my p-0171 code but wanted to ask if spraying all the lines and such with brake parts cleaner would give the same results as using starter fluid or card cleaner? I was thinking brake parts cleaner so it might be so harmful on the plastic hoses and rubber on the motor. Or would I be better off doing the old cheap cigar smoke test? I was gonna test for a leak and if no leaks I was gonna replace the upstream 02 sensor on bank 1 since the cat was very bad. I know typically 02 sensors throw their own codes but I know the downstream sensor was bad before and it threw no codes. I have also cleaned the MAF several times and that never helped. So if I find no leaks I would be leaning more towards a bad 02 sensor or possibly bad MAF.