So i replaced my o2 sensors with the NGK sensors about 7k miles ago. Didn’t have codes for a while, but just checked it today and I’m pulling codes P0031, p0051, & p0136 (all related to o2 sensors). I’m also pulling codes for p0303 (cylinder 3 misfire) and p0455 (evaporation emission system large leak). I’m wondering if its got anything to do with the catalytic converters? Should i look into replacing the whole exhaust? I don’t even know where to start at this point.
Also, the misfire is usually most active and heavy after I’ve been driving around town all day (or highway) and turn the Jeep off (get some gas, go in a store, etc.) and try to crank it back up. Just idles horribly and wont have any acceleration until i hit the gas petal a few times. Like I said, I’m lost. Any help would be awesome. Thanks!
Also, the misfire is usually most active and heavy after I’ve been driving around town all day (or highway) and turn the Jeep off (get some gas, go in a store, etc.) and try to crank it back up. Just idles horribly and wont have any acceleration until i hit the gas petal a few times. Like I said, I’m lost. Any help would be awesome. Thanks!
