need new O2s
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Northstar Engines and System Technical Discussion Discussion, need new O2s in Cadillac Engine Discussion; what brand is having the best service I havent had good luck with Bosch so dont include those. Thinking of ...
  1. #1
    parts68 is offline Cadillac Owners Fanatic
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    need new O2s

    what brand is having the best service
    I havent had good luck with Bosch so dont include those.
    Thinking of new Delcos(OEMS AFS73) or Nippondenso.


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  3. #2
    eldorado1 is offline Cadillac Owners Connoisseur
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    Re: need new O2s

    Delcos are the best O2 sensors for our vehicles.

  4. #3
    DANNY BROWN is offline Cadillac Owners Member
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    Re: need new O2s

    I Have A 2001 Deville,and I Am Experiencing Rough Idiling.I Looked Up The Current Codes Which Are Pcm171,174(bank1&bank2,fuel Trim System Lean).is This A O2 Sensor?

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    Ranger's Avatar
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    Re: need new O2s

    Quote Originally Posted by DANNY BROWN
    I Have A 2001 Deville,and I Am Experiencing Rough Idiling.i Look Up The Current Codes Which Are Pcm171,174(bank1&bank2,fuel Trim System Lean).is This A O2 Sensor?
    Might be a sticking EGR valve. Remove it and clean the pintle.

  7. #5
    DANNY BROWN is offline Cadillac Owners Member
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    Re: need new O2s

    Where Is The Egr Valve Located?

  8. #6
    Ranger's Avatar
    Ranger is online now Cadillac Owners Member
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    Re: need new O2s

    Quote Originally Posted by DANNY BROWN
    Where Is The Egr Valve Located?
    Go to the Tech Tips section. There is a "How To" clean the EGR with pics.

  9. #7
    parts68 is offline Cadillac Owners Fanatic
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    Re: need new O2s

    Quote Originally Posted by eldorado1
    Delcos are the best O2 sensors for our vehicles.
    thats what I bought and always have for GMs but heard on the GTP board that the Densos are working well.
    At least I only need 2,my Firebird takes 4!

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