01 deville o2's locations?
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Northstar Engines and System Technical Discussion Discussion, 01 deville o2's locations? in Cadillac Engine Technical Discussion; I tried doing a search,but came up with nothing.I need to know were the o2 sensors are located.Its a 01 ...
  1. #1
    robz is offline Cadillac Owners Member
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    Question 01 deville o2's locations?

    I tried doing a search,but came up with nothing.I need to know were the o2 sensors are located.Its a 01 deville NS 4.6.Thanks

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    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: 01 deville o2's locations?

    One on each exhaust manifold and one after the CAT.

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    robz is offline Cadillac Owners Member
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    Re: 01 deville o2's locations?

    thanks

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    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: 01 deville o2's locations?

    Try these................Hope you have small hands, crow's foot wrenches, and patience. And DO NOT twist any of the wiring harnesses.

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    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: 01 deville o2's locations?

    Oh yeah, you'll need a "special" O2 sensor socket. It's basically a deep well socket with a slot milled in the side.

  7. #6
    robz is offline Cadillac Owners Member
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    Re: 01 deville o2's locations?

    Thanks,Have a question so the bank 1 sensor 1 is the one close to the firewall right?The other 2 are easy,but the one close to the firewall seems hard.

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    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: 01 deville o2's locations?

    What code are you getting that makes you think an O2 sensor is bad ?? Many times, a vacuum leak will trigger a sensor efficiency or "bank lean" code. The Northstar O2 sensors are usually problem-free themselves. Not saying that is your case, but post the codes so we can dig deeper and maybe save you some time and money.

    Yes, right bank sensor is B1 S1. Look at the picture title line.

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