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01 tacoma 02 sensor nuts

Discussion in '1st Gen. Tacomas (1995-2004)' started by toco66, Apr 15, 2009.

  1. Apr 15, 2009 at 5:34 AM

    toco66 [OP] Member

    Mar 31, 2009
    So my 01 tacoma developed an exhaust leak over the last month or so. shortly after the check engine light came on. I finally had a chance to crawl under it to see where the exhaust leak was coming from. Turns out the 02 sensor after the cats was just sitting in the port, the nuts have apparently completely rusted off? Most bizarre thing I've ever seen. Anyways, 2 questions...

    1. What size are the nuts to hold the 02 sensor in?
    2. If I bolt the 02 sensor back in, and have the computer reset, will the o2 sensor be ok, or do I have to replace it? I haven't brought the truck to get the code checked, I'm just assuming that's what caused the light to come on.

    Any help is appreciated. Thanks.
  2. Apr 16, 2009 at 12:59 PM

    thenrie Well-Known Member

    Sep 1, 2007
    Stafford, VA
    2000 Tacoma, SR5, TRD, 2.7L (LEV), 4wd, 5sp m
    Magnaflow cat and cat-back exhaust, AFE Stage 2 cold-air intake system, 2.5" lift via Skyjacker leaf packs, Bilstein 5100s.
    I replaced the nuts with oem from Toyota, because they are made from a softer material, sort of like a pot-metal, that won't seize to the stud as they rust away, so that when you decide to replace them, you don't break off the studs and have a real problem. Just check and replace them every so often. Otherwise I'd replace them with stainless nuts. I don't know the size, probably a 12mm coarse thread.

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