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Thread: Curious electrical 1-wire connector on left exhaust manifold flange at crossover

  1. #1
    Junior Member
    Join Date:  May 2018

    Location:  Irvine CA

    Posts:    25

    Curious electrical 1-wire connector on left exhaust manifold flange at crossover

    Repair question - I’m removing my exhaust crossover and one of the left bolts attaching it to the exhaust manifold seems to have (by feel, I can’t see it) an electrical connector attached to it. My manual doesn’t even show an exhaust system diagram, let alone an electrical connector in that area. Anyone please tell me what it is? I gently pulled it and a black plastic single wire connector came undone. I can’t feel the connector it came off of but I’m guesing an exhaust sensor of some type. It points upward and slightly toward the engine block. It is NOT the oxygen sensor, which I can see below it pointing to the left side of the car.

    Sorry, is there a better forum to post questions - I didn’t see it.

    By the way, what is the best sequence for unbolting the crossover pipe, cat and both exhaust manifolds? I’ve already got the muffler out. I can’t easily access the flange nuts for the left manifold. They’re too closely wedged between the crossover pipe and engine block to fit a socket extension in. All the crossover pipe to converter and manifold nuts face forward. Can only access the outboard nuts.
    Last edited by Ed81DMC; 05-29-2018 at 12:19 AM.

  2. #2
    Member
    Join Date:  May 2011

    Posts:    56

    those swivel socket extensions really help.

    I unbolt the cat and the crossover from the front side, working from below, in front of the rear wheels.

    Remove muffler
    Remove Cat
    remove crossover (rotate it out toward passenger side and down)
    Remove manifolds

  3. #3
    Junior Member
    Join Date:  May 2018

    Location:  Irvine CA

    Posts:    25

    Quote Originally Posted by mark w View Post
    those swivel socket extensions really help.

    I unbolt the cat and the crossover from the front side, working from below, in front of the rear wheels.

    Remove muffler
    Remove Cat
    remove crossover (rotate it out toward passenger side and down)
    Remove manifolds
    Thanks Mark!


    Sent from my iPhone using Tapatalk

  4. #4
    Administrator Ron's Avatar
    Join Date:  Jun 2011

    Location:  North GA

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    Club(s):   (SEDOC) (DCUK)

    If you could post a pic or the wire's color (including any stripe), it would help us identify it for you...

    Yes, the General Section is the best place to post questions.
    (Fixed that for ya ;-)

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