hello,im just having a hard time passing smog, replace all 4 sensors, i ve got 02 sensor wiring malfuction
also replaced the purge valve on the emissions canister and vaccum hoses going to the plenum,so i ve
clear the codes on the purge valve and the 02 sensors behind the catalyst converter but not bank 1
close to the engine
I dont know if its BS or not but when I last had to go in and didnt pass the tech told me to go on the highway and open the truck up, otherwise put the peddal to the floor and immediately bring it back, Hot. Dont let it set and cool, I passed. Granted I was in a chevy, but its alot cheaper than dumping more $ into it.