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P0302 misfire

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Old Dec 17, 2011 | 05:14 PM
  #1  
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fullmonte60
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From: MD
Default P0302 misfire

about a minute i started my car (2007 4.0)yesterday afternoon it started to run rough and shortly after the CEL light came on. when i got home i saw this code. so i pulled that wire from the coil and restarted and it was the same so i pulled that plug and changed it no better. changed the coil & wires- no better. what next...lol ? thanks
Old Dec 17, 2011 | 07:18 PM
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fullmonte60
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here's an update.... i hadn't checked the code after the parts replacement but wanted to clear the CEL and when i connected the code reader it's now a 2197 sensor stuck, bank 2,1. could have the o2 sensor gone bad in the time i drove the car when the cylinder 2 wire, plug, coil position went bad? thanks again.
Old Dec 19, 2011 | 12:15 AM
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so, did you solve your misfire? you have a way to monitor the o2? maybe the code set because the o2 was reading rich..
Old Dec 19, 2011 | 06:18 AM
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it still ran rough after clearing the 2197 code after i changed the coil & wires. not as rough as with the 302 code though. i only ran it a minute after, not long enough for another 2197 to come in but long enough to feel it running rough. i'll run it again tonight until a code (most likely 2197) comes in. i'm figuring if it does i'll need to change the o2 sensor.
Old Dec 31, 2011 | 01:07 AM
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the o2 sensor didn't fix the problem. driver's side cat was cooked. feels good again.
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