EGR valve boogers

Discussion in 'Chevy Blazer Forum (GMC Jimmy)' started by andrewh, Jan 17, 2010.

  1. andrewh

    andrewh New Member

    Had a hard time starting my '95 blazer with a 4.3l. It idled like crap and was just kinda a pain. Hooked up a scanner and it had a "EGR pintle position control problem" I removed the egr valve expecting to have to replace it and found it to be stuck open with a piece of hard black debris. I cleaned it and reinstalled it. Everything is happy now. Anyone else have issues like this? Where do such deposits originate? Is it time to run premium fuel? -Andrewh
  2. tattooed4life

    tattooed4life Epic Member 5+ Years 500 Posts

    I have had replace mine also, I did get away with cleaning it a couple of times but that only lasted for so long. Try running some seafoam thru the fuel system this may help in cleaning up the deposits.
  3. andrewh

    andrewh New Member

    Seafoam, will-do. Thanks.
  4. wis bang

    wis bang Rockstar 100 Posts

    This is a common problem w./ the 4.3L egr valves. Cleaning the crud out helps, regular applications of seafoam via the brake booster vacuum hose keepse it to a minimum. The CES will goi away once you clean it.

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