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EGR Reverse Purge Flow

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  • #1

    EGR Reverse Purge Flow

    New long block installed 1,506 miles so far got a few codes a lean bank code and an o2 sensor code drove for about 18 miles today after replacing the o2 sensors and a code pops up EGR purge solenoid reverse flow. I checked the EGR lines and they seem to be right I am going to check again in the morning. Any other idea's what it could be?


    thanks in advance for any help!
    1997 Camaro Z28 Pacesetter Long tubes, ORY-Pipe, Accel 30# Injectors, MSD Cap & Rotor, MSD Super Conductor Wires, NGK Irdium TR55IV Plugs, and Borla Catback. Madtuner Tune, SLP High/Low fan switch, NGK o2 sensors

    New Longblock at 110,947 and everything above.
    Tags: None
  • #2
    What was the EXACT numerical code? There is nothing similar to what you describe for the 96/97 LT1's EGR system. A code (P0403) for a faulty electrical circuit on the EGR vacuum (there is no EGR purge solenoid) solenoid, and a code (P0400) for insufficient EGR flow. But nothing like you describe.

    Could you possibly mean a code (P0443) for the EVAP purge solenoid circuit, or one of the manufacturer specific codes (P0441) for no flow during purge, or (P1441) vacuum present during non-purge?
    Fred

    381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor O/D - Strange 12-bolt - 4.11's - AS&M headers - duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP/800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117MPH straight motor

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    • #3
      when it set's itself again i'lll post it back up but i don't think it was any of those ones


      in any case will any of these codes be doing serious damage to my engine ?
      1997 Camaro Z28 Pacesetter Long tubes, ORY-Pipe, Accel 30# Injectors, MSD Cap & Rotor, MSD Super Conductor Wires, NGK Irdium TR55IV Plugs, and Borla Catback. Madtuner Tune, SLP High/Low fan switch, NGK o2 sensors

      New Longblock at 110,947 and everything above.

      Comment

      • #4
        Not the ones I listed.
        Fred

        381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor O/D - Strange 12-bolt - 4.11's - AS&M headers - duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP/800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117MPH straight motor

        Comment

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