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Myself, and the other mods have been very nice and lenient with the rules. We have been deleting threads, and giving out warnings. Some members didn't get the clue and re-posted over and over... Now ANY member buying or selling in this section will be banned... No IF's AND's or BUT's.
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Running rich

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    #16
    There we go. Now we can do some proper diagnosing!

    First, make sure the wiring to those senors is in good condition.

    The o2 sensor is most likely the primary culprit, though the other two certainly don't help. Replace that o2 sensor with a Denso or NTK unit (no Bosch. They don't work.) You can find them cheap on RockAuto.com. Be sure to get the correct sensor for your year and trim level, as the different engines (F22A1, F22A4, and F22A6) have different o2 sensor configurations.

    Clean your EGR system, and replace the valve if necessary. Cleaning out the EGR ports can be fairly involved, so save that for last. You might not HAVE to do it... but it wouldn't hurt. You can find instructions in the DIY section of this site.

    Replace your VSS. It'll be nice to have a working speedometer again, I'm sure!


    The VSS and o2 sensor codes are most certainly putting your ECU in limp mode. In limp mode, the ECU is running on pre-set fuel tables, overfueling for safety (as it is safer to add more fuel, rather than risk running with too little fuel... which can cause serious engine damage very quickly.)


    Fix those problems. Inspect your spark plugs, as they may be fouled from running rich. Replace if they're noticeably discolored. Disconnect your battery for a few minutes to clear the codes from the ECU. Drive around for a while at a variety of speeds to complete a full drive cycle. Barring any additional problems, all should be good. You'll notice an increase in fuel economy AND power.






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