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99 Civic HX - Bad upstream O2. What brand of O2 to replace with?

Discussion in '6th Generation Honda Civic (1996-2000)' started by Gravidee, Aug 13, 2017.



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  1. Gravidee

    Gravidee New Member

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    So some of you may know that the HX uses a 5 wire O2 sensor vs your typical 4 wire.

    These 5 wire O2's cost an arm and a leg and I don't plan to keep the single cam in there for more than a year or two and was wondering has anyone tried the cheaper walker/ultra power O2's instead of NGK/NTK/Denso?

    Some of them are running as much as $150+ which in my opinion is a bit too much since the car I only paid $1500 for the car. I don't want to cheap out and buy something that won't work but not wanting to spend a lot on a sensor I will only be using for a year or so.
     
  2. boofoo

    boofoo Respected Registered VIP

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    5 speed or CVT?
     
  3. Gravidee

    Gravidee New Member

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    5 Speed.

    Should I be staying away from Walker/Ultra Power O2's?
     
  4. boofoo

    boofoo Respected Registered VIP

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    How do you know the wide band O2 sensor is bad?

    $172 for the Denso sensor from Rockauto. Price too high?
     
  5. Gravidee

    Gravidee New Member

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    Check engine light, car driving like crap, loss in MPG.

    Pulled code and it's showing for that sensor. Can't remember code off the top of my head, I scanned it a few days ago.

    $172 is high (to me) but I guess it's because this is my first time buying a 5 wire o2 sensor, lesson learned. I'm used to buying your typical 4 wire denso o2 for $28-$50.
     
  6. boofoo

    boofoo Respected Registered VIP

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    Post the actual OBD2 code. There may be other possible causes for the code.

    Are additional CEL codes thrown?
     
    Last edited: Aug 15, 2017
  7. Gravidee

    Gravidee New Member

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    P1164

    After taking off the exhaust manifold there is a crack around the O2 sensor bung. Replaced it with a oem style exhaust manifold and the car now seems to drive with no sputtering and can definitely tell power is back. I will come back to tell you guys if the code comes back, it's been 2 days.

    With the new O2 sensor the code came back within 30 mins of driving.
     
  8. Gravidee

    Gravidee New Member

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    P1164 came back.

    I'm about ready to dump this D16Y5.

    I've replaced the O2 Sensor with a Delphi one, any chance of it being bad or the car being picky it's not NGK/Denso?

    I've replaced the cracked oem exhaust manifold with a Dorman OE style replacement, fitment is spot on, no leaks so I know for damn sure this is good.

    I'm left with replacing the O2 Sensor to a better known brand NGK/Denso or replacing the ECU but I don't think it's the ECU.

    Any ideas? If it's going to cost too much I will most likely just get rid of it and go B20.

    I can still return the O2 sensor. So far I'm out $300 or so ;/
     
  9. boofoo

    boofoo Respected Registered VIP

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    Carefully inspect the O2 sensor connector pins and wires. The problem could be there.
     
  10. Gravidee

    Gravidee New Member

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    It's dark here now and i'm about to head to work, i'll inspect it when I get back home. Good suggestion!

    I went ahead and placed an order for a Denso sensor. I figured since I've already spent $134 for the Delphi why not give the Denso a shot at $40 more. If it fixes it, great! If it doesn't then I am either buying a B20 or headed to a mechanic.

    FWIW : I used to drive a 93 accord (5-6 years ago) and when I had a bad O2 on that car I decided to replace it with a Bosch O2 sensor. Code went away and came back a day later. Replaced it with a walker sensor and same thing. Went onto the forums and it turns out that car was very picky with O2 sensors and only worked well with denso/ngk. I immediately bought a denso o2 sensor and all was well after that. I am hoping it's the same case here since this is my first time using the brand Delphi. After some research it seems they are a parts supplier for GM. (owned by gm?) Had I known that beforehand I probably would've just opted for the Denso.

    Denso O2 gets here Wednesday, fingers crossed this is it. I've bought the car and have owned it for about a month now but the total amount of time i've driven it is probably 10 hours max altogether.
     
  11. boofoo

    boofoo Respected Registered VIP

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    Good luck!
     
  12. Gravidee

    Gravidee New Member

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    Replaced with Denso O2 and all is well now.
     
  13. Mr.Baker

    Mr.Baker Mr. Search Registered VIP 5+ Year Member

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    It pays to buy the right brand.
     
  14. Gravidee

    Gravidee New Member

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    Never knew Delphi was the wrong brand. Didn't hurt to try imo.
     
  15. Mr.Baker

    Mr.Baker Mr. Search Registered VIP 5+ Year Member

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    Throwing money away and wasting time buying the wrong parts does hurt.
     
  16. Gravidee

    Gravidee New Member

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    Sorry to bring the thread back up but..

    I couldn't find any info on the Delphi so I gave it a shot, nothing wrong with that.

    It doesn't hurt, not for you guys anyway. Now you know it doesn't work. Take it for what you will.
     


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