Just when i got use to my cel being off, its back on. Had it scanned and was told cat conv reperforming under par. rather than spend out more money, $135 for new one, i was told to try some feul injector cleaner, and some stuff called sea foam engine cleaner. Reminder, i am no mechanic, but could it be that i am getting some bad gas? I mean, if its saying its performing under par, doesnt that ultimately mean that i'll just be getting bad gas milage? its not like its gonna leave me stranded on the side of the road either, right? Advice welcomed and greatly appreciated!
Unfortunately i didnt get the code, had the oreilly guy scan it. When he said cat conv running efficiency low, i came home and found in my haynes book 2possible codes. He also said o2 sensor could be gone bad causing that code to show. I replaced o2 sensor closest to rear manifold few weeks ago, but neglected to change thw one near the rear.
I rarely go over 55. I take it easy on my jeeps, but after i am done fishing, i will run it up going home. If it drives, no bogging, whats tht tell me? I plan on a beach trip this weekend and dony want the family stranded.
My first indication my cat was plugged was when i dropped out to pass on a two lane road and could not get over 3K rpms when it kicked down. Luckily I was able to duck back in. Then it got to where it wouldnt climb a hill without losing speed. If I stayed on it, valves rattled, misfired, and heat climbed. What happened wass the pressure that is supposed to go out the tail pipe was backing up through the valves into the intake, causing low vacuum. A true phenomenon.
All the rear sensor does is monitor the cat. If it is sending slightly incorrect correct signal, the PCM throws the cat code. It is entirely possible that it is lazy and not throwing a code specific to the sensor. If you get a sensor, get an NTK.
Leaning towards a sensor. Its my cheapest, easiest bet i believe. Dont think the cat is clogging, cause i am not misfiring orbogging and theres no lost power. Gave her some injector cleaner today and plan on replacing sensor this week.