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Thread: Replacing oxygen sensor?

  1. #1
    Join Date
    Nov 2003
    Location
    NH
    Posts
    22

    Replacing oxygen sensor?

    Need a little help...
    I am replacing the o2 sensor in my 86 Brougham. I have the haynes manual (70-93 rwd models) and it says the sensor is located inside the exhaust manifold near the cat converter. However this Haynes manual sucks and most of the locations of various sensors have been wrong. I was wondering if the sensor really is in this location, or if it is somewhere else. Some other threads have mentioned that o2 sensors can be located near the firewall under the hood. I'd like to know where it is before i take apart the exhaust, any help would be appreciated, thanks.


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  3. #2
    brougham is offline Cadillac Owners Master
    Automobile(s): 1991 Cadillac Brougham D'Elegance 5.7 Litre, 1994 DeVille
    Join Date
    Jun 2003
    Location
    Canada
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    6,477

    Re: Replacing oxygen sensor?

    It's probably in one of the exhaust manifolds. And I think it's pretty easy to see but my 1991 isn't here so I can't check. You shouldn't have to take the exhaust apart to get to it.

  4. #3
    Join Date
    Nov 2003
    Location
    NH
    Posts
    22

    Re: Replacing oxygen sensor?

    Ok, thanks, I'll check it out this afternoon.

  5. #4
    Jeppi94's Avatar
    Jeppi94 is online now Cadillac Owners Fanatic
    Automobile(s): 1989 Cadllac Brougham
    Join Date
    Jul 2013
    Location
    Gothenburg, Sweden
    Age
    22
    Posts
    173

    Re: Replacing oxygen sensor?

    I'm about to change it o my 1989 Brougham, did you find it in your 1993 brougham?


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