What is backyard method to pull codes '89 Chevy

Discussion in 'Chevy Truck Forum' started by RVpilot, Nov 10, 2008.

  1. Kennyray

    Kennyray Moderator Staff Member

    Oct 6, 2005
    Likes Received:
    if you have a vacuum pump, apply vacuum to the egr when it is idling, if it starts to stumble the egr was closed until the vacuum was applied, if no change, take the egr off and try cleaning it to get it to seat.

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