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  • Egr

    My EGR alve has quit working and i was wandering if i have an hesitation when accelerating if this could cause this?

    What would the EGR do if it was broke.

    I know it is just wanderirng what it would make my car do

  • #2
    Re: Egr

    I've seen the following EGR valve failures:

    1) stuck in an open positon, no valve movement: very rough idle or not being able to idle at all. Part or full throttle performance is lacking. Poor gas milage. Should get an SES light.

    2) valve operates but will not fully close: again, poor or no idle. Part or full throttle performance loses not noticeable. No SES light.

    3) valve stuck in closed positon: Engine can rattle or ping on accelleration (from pre-ignition/detonation), SES light because valve does not open when commanded.
    Now Playing: \'99 Pewter Firebird, stock, bone stock, and nothing but stock, so help me God!<br />Comming attractions: K&N Filter, Lid Mod, Intake Bellows Smooth Pipe Mod.<br />I dream about: Forced Induction (TC or SC) or NOX (or both!)

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    • #3
      Re: Egr

      Originally posted by CDNFB
      I've seen the following EGR valve failures:

      1) stuck in an open positon, no valve movement: very rough idle or not being able to idle at all. Part or full throttle performance is lacking. Poor gas milage. Should get an SES light.

      2) valve operates but will not fully close: again, poor or no idle. Part or full throttle performance loses not noticeable. No SES light.

      3) valve stuck in closed positon: Engine can rattle or ping on accelleration (from pre-ignition/detonation), SES light because valve does not open when commanded.
      If its missing under a load its probibly a coil pack.

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      • #4
        Re: Egr

        Originally posted by CDNFB
        I've seen the following EGR valve failures:

        1) stuck in an open positon, no valve movement: very rough idle or not being able to idle at all. Part or full throttle performance is lacking. Poor gas milage. Should get an SES light.

        2) valve operates but will not fully close: again, poor or no idle. Part or full throttle performance loses not noticeable. No SES light.

        3) valve stuck in closed positon: Engine can rattle or ping on accelleration (from pre-ignition/detonation), SES light because valve does not open when commanded.
        If its missing under a load its probibly a coil pack. When they go, they go.

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        • #5
          Re: Egr

          just buy the blockoff plates from ZZP and get the codes deleted via tuning. Bam, less weight, no carbon going into your intake manifold, cleaner looking engine bay, and maybe 1 mpg loss. If that wasn't the problem... then you still reaped all the above benifits.
          97 Camaro<br />160* thermostat, z28 shock/springs, 3\" Magnaflow cat, 3\" Magnaflow catback, LT1 disc/limslip/3.42 rear, SLP CAI<br /> <a href=\"http://www.cardomain.com/memberpage/609893\" target=\"_blank\">http://www.cardomain.com/memberpage/609893</a>

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