oxygen sensor

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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, oxygen sensor in Past Cadillac Vehicle Discussion; does anybody know if a 1992 deville has more then 1 oxgen sensor? I don't know if that's a stupid ...
  1. #1
    deville92 is offline Cadillac Owners Member
    Automobile(s): 2002 Deville
    Join Date
    Feb 2013

    oxygen sensor

    does anybody know if a 1992 deville has more then 1 oxgen sensor? I don't know if that's a stupid question but Please be honest.thank you

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  3. #2
    VEGASELDO91 is offline Cadillac Owners Fanatic
    Automobile(s): 1991 ELDORADO (R.I.P.); 1995 Sedan Deville
    Join Date
    Nov 2009

    Re: oxygen sensor

    The 4.9 liter engine has two O2 sensors both are before the CAT. I just replaced both of mine on Friday, not too hard at all actually. One is located behind the radiator fan and the other can easily be accessed from under the vehicle. They should take a 7/8 O2 socket to remove/install, or a wrench may work too. Removing the radiator fan made it a lot easier for me!

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