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bad sensors

Discussion in '1992-Present Chevy & GMC models' started by steve_97, Mar 20, 2002.

  1. steve_97

    steve_97 Registered Member

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    I was wondering if the computer does not give any service codes, does that mean all of the sensors are good or can there still be problems? 94 chevy 4x4.

    thanx
     
  2. Shorts

    Shorts 1/2 ton status

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    usually if a sensor goes bad, it'll trigger a code. thats due to the fact that the sensor is no longer taking a reading that is consistent with the previous readings.

    one sensor that usually draws a phantom code is the EGR.

    if you want, you can run the codes anyway and see if there's anything stored. if not, then you don't really have anything to worry about. the sensors are still in good enough condition that the truck is getting consistent readings.
     
  3. steve_97

    steve_97 Registered Member

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    thank you, i already ran the codes, it came up good. I was just wondering because it seems like i have less power. might need new wires, but plugs are new, also getting like 12 mpg in town.

    thanx
     
  4. DesertDueler

    DesertDueler 1/2 ton status

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    02 swnsors dont always set off a code, but can be bad.
     
  5. Shorts

    Shorts 1/2 ton status

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    i second what desertdueler said about the O2....you might wanna replace that and see what happens. also, your cat might be dead as well.
     
  6. steve_97

    steve_97 Registered Member

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    Catco stainless Y-pipe and cat from summit along with a new o2 sensor is already in the plans. The help is always greatly appreciated. I'll post in about 2 weeks to let everyone know if it helped.
    thanx
     

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