Xxx 4at

I was told last year that it needed a new second O2 sensor (the one in the cat) so I replaced that - so my guess is that it's the sensor closer to the front of the vehicle now.Anyway, when that O2 sensor was bad, it ran a *little* rough but no large difference, and the mpg went down a *little* as well.Note that some engine control systems are smart enough to cut fuel to the misfiring cylinder - this makes the misfire somewhat less hazardous. Now you start getting misfire codes on all cylinders, because the mixture on all of the others is now too lean, but the O2 sensor is still detecting unburned fuel.As mentioned above, O2 sensors do not measure fuel.After reading a bit on this, it seems that the TLs like to throw multiple misfire codes for a single cylinder misfire.Also, it's looking like a bad coil pack is a pretty good possibility if this isn't characteristic of an O2 sensor going bad. Replaced the #2 coil and she purrs like a kitten again!

I need to go meet someone 35 mile away so I'll take this car instead of my accent and make sure there are no lingering issues, but I'm pleased with the outcome so far - I've never diagnosed a bad coil pack before ALWAYS start your troubleshooting with the "problem" that is closest to the air intake.I just checked the codes it's throwing the bad O2 sensor and a misfire in all 6 cylinders (see pics).I've not experienced misfire from a bad O2 sensor before, does this seem like it is related, or is there something more lurking? Thank you in advance, please let me know if there's pertinent information I'm missing!However, please keep in mind that the HTML-5 site version has substantially limited features (non-optimal video quality possibility of delayed streaming).We recommend that all our users opt for the Flash-version of the chat (currently in use). To become a premium (GOLD) member for life and unlock this feature, all you have to do is buy any amount of tokens one time!

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