Tlove1 Posted January 2, 2017 Share Posted January 2, 2017 (edited) I have a 06 Lincoln Zephyr it has 192k on it I bought it for 700$. It was was m is firing when I first bought it. I found out that cylinder 4 and 5 wire that connects to coil pack was bad. The wires were fried. So I replaced the two wires and also sent my PCM out to be fixed cause it was fried. Along with that I also replaced the EGR valve (it was leaking) all the spark plugs and also all the coil packs and also the air filter. Car runs better but it still is mis firing and also I am getting a check engine light of a p0430. I believe that's something to do with the cats.. My question is should i dish out the money to replace bank 2 cats? I don't want to pay the 400$ for a new cat. And it not fix the misfire. Any help thanks Edited January 2, 2017 by Tlove1 Quote Link to comment Share on other sites More sharing options...
drolds1 Posted January 3, 2017 Share Posted January 3, 2017 The most likely scenario is that driving the car with a misfire took out the cat(s). The misfire causes unburnt, raw fuel to go downstream into the cat where the high heat lights it off. Explosion and fire in a CC-not good. See the video. Quote Link to comment Share on other sites More sharing options...
drolds1 Posted January 3, 2017 Share Posted January 3, 2017 The most likely scenario is that driving the car with a misfire took out the cat(s). The misfire causes unburnt, raw fuel to go downstream into the cat where the high heat lights it off. Explosion and fire in a CC-not good. See the video. Quote Link to comment Share on other sites More sharing options...
Tlove1 Posted January 3, 2017 Author Share Posted January 3, 2017 Ok will it still be m is firing though if I fixed the original problem.. ALSO can I still drive it. The cat is 400$ and I really don't have that until 3 weeks Quote Link to comment Share on other sites More sharing options...
drolds1 Posted January 3, 2017 Share Posted January 3, 2017 As I stated above, it's very likely that the misfire condition ruined the cat. It probably caused the EGR to leak as well. No, you shouldn't drive it with a misfire. See this. Quote Link to comment Share on other sites More sharing options...
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