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o2 sensor wiring help

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  • Integcap90
    replied
    noticed this was a semi-old thread. i put some headers on in december. did the exact same thing this bryan24207 did, and now i have a cel and my car is running poorly. i did solder the wires for o2. silver to copper. is that a definite no-no. whats the proper way to do it? i still have one good 02 laying around

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  • bryan24207
    replied
    haha, i love the way it looks thats for sure, but install is a different story, i had to cut the fan soo much, the shroud AND the blades!! wasnt sure how that would affect it but it still seems to keep the car cool

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  • PMI
    replied
    Nice jack! LOL. Being able to drive the car is overrated anyway, I still can't get used to seeing mine with the wheels on the ground as opposed to on stands... so, what we REALLY want to know is, how do you like that new header??

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  • bryan24207
    replied
    i drove the car this morning with is disconnected, was very suprised when my check engine light did not come on. although i could smell the exhaust really strong, since putting in this new sensor the smell has gone away and car runs really well, just had that 1 stumble for a brief second, when before it was doing it almost all the time and made the car super hard to drive

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  • welfare
    replied
    if the problem persists, try disconnecting the o2. if the problem is ignition related, it will remain with the o2 disconnected

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  • bryan24207
    replied
    uh oh, just stumbled a bid when i ran to the store, but didn't do it after that or on the way home..ordered new plug wires and gonna do the plugs soon..maybe thats the issue now lol

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  • welfare
    replied
    more then likely the issue was the shielded wiring. it is necessary since the o2 signal is quite sensitive compared to other sensors. sensitive and detrimental. it's read through millivolts, so the shielding is necessary to block out interference. shielding is actually usually grounded on its own, so a common problem with o2 tampering is that the signal becomes shorted to the shield ground

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  • unified112
    replied
    Glad you got it sorted... O2 sensors can be a bitch!

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  • bryan24207
    replied
    well i just got the new bosch unit, clipped apart a bunch of the wrapping in the bay and pulled the o2 sensor harness wire as far to rear of the motor as i could..didn't get as far as i hoped so i ended up extending the o2 wire AGAIN, but this time i had the wiring from the Old o2 sensor, got that, some butt connectors, heat shrink tubing, and 3M electrical tape..got it all in and it seems to be working alright so far, pulled negative terminal let car sit with no load on running for 20 mins and took for test drive..runs great!!

    heres some pics anyway

    custom made jack, drove up on brick, from brick to spare tire, then put brick under stock jack lol


    my new extended bosch sensor


    and this is as far as i could move the o2 plug from the harness, its almost near the trottle body

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  • bryan24207
    replied
    yea, so im gonna get that one, then i already unclipped the harness from the block so i'll just find a safe route down threw the back of the motor and i dont think i will have to extend shit, will update when i do as this would be good info for someone else who does this set up as well..

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  • PMI
    replied
    Sounds good. Looks like 18.9 is the OE lead length, Bosch and Denso are the same.

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  • bryan24207
    replied
    ima be picking this one up in the morning..its got almost a 19 inch lead and ima run the harness over the back of the block instead of the way i have it now going down under the front of the motor across the oil pan and to the new spot

    im getting this one
    http://www.autozone.com/autozone/par...6_115960_1784_


    cuz the new sensor spot is here

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  • PMI
    replied
    Either way should work, tbh.

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  • PMI
    replied
    I would not cut and splice the connector on the harness side, just b/c it is harder to fix that if it does not work. If the new one is too short, I would get the universal O2 sensor, which comes with a wire and a connector intended to be spliced. I dont think the OE sensors are much longer than this one

    NEW DENSO O2 OXYGEN SENSOR DRIVER SIDE LH LEFT HAND ACURA INTEGRA 234-1009

    Description / Notes:NP2341009
    "Denso Oxygen Sensor -- DENSO SUPER CLASS FIRST TIME FIT OXYGEN SENSOR

    Denso Super Class First Time Fit Oxygen Sensors are specifically designed to meet the challenging demands of today's engines. Each of Denso's Oxygen Sensor is constructed from the highest quality materials available. Manufactured to the OE standards and subjected to rigorous safety and performance tests.

    Specifications:

    1-wire
    18.82 in. lead wire

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  • bryan24207
    replied
    i could see that being used on the sensor part, but since i am just gonna go buy a brand new sensor and plug it in, the harness side is just good ol copper wire so i will extend that if i have to instead of messing with all this fancy wire from the sensor side

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