My '98 Jeep Cherokee with 83,000 failed its smog test today and I truly did not see that coming. It has been running great, gas mileage is about what it has always been, maybe a little less as it has seen more stop and go city driving but nothing that would make me really concerned...
ANYWAY, it failed on the NO (PPM) section at 15MPH. The MAX is 522 and I came in at 660! At 25MPH the MAX is 775 and I passed with 237. Everything else looks great... so where should I start?
%CO2 @ 15MPH = 14.9 %CO2 @ 25MPH = 14.9 %O2 @ 15MPH = 0.1 %O2 @ 25MPH = 0.0
HC (PPM)
MAX @ 15MPH = 53, I'm at 42 MAX @ 25MPH = 37, I'm at 37
CO (%)
MAX @ 15MPH = 0.67, I'm at 0.05 MAX @ 25MPH = 0.81, I'm at 0.04
NO (PPM)
MAX @ 15MPH = 522, I'm at 660 (fail) MAX @ 25MPH = 775, I'm at 237 (pass)
What's even worse is that after calling my mechanic he said he can't do any of the work and that I have to call a repair station... Geez California really sucks....
Doing a little research makes me think I might need a O2 sensor, its original or a catalytic converter... original too. Anyone have any clues on where I should start or should I just go find somebody to do the work?
Thanks as always....
-- Taylor
'89 Audi 200 '03 Audi S6 Avant '98 Jeep Cherokee Sport