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Need Some Help!

This is a discussion on Need Some Help! within the Firebird / WS6 forums, part of the Vehicle Specific category; So I finally got the time to go to AutoZone and find out why my 'service engine soon' light has ...

  1. #1
    Junior Member TruThug's Avatar
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    Need Some Help!

    So I finally got the time to go to AutoZone and find out why my 'service engine soon' light has been coming/going on and off. I found out this (down below) and hopefully someone can help me fix the problem, pictures are nice since I have no clue where anything is under the hood. The guy at AutoZone focused mainly on the last two 'Probable causes' if that helps at all.

    1999 Pontiac Firebird V6 (All Stock)

    The Reason:
    Definition
    -EGR valve circuit range/performance
    Probable cause
    -Open or short circuit condition
    -Poor Electrical Connection
    -Faulty EGR value
    -Blocked EGR Passages

    Guessing the Code it has is P0404.

  2. #2
    Junior Member hippiespace's Avatar
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    take out the EGR system. its useless 02's don't have them from the factory,Most headers don't have the EGR connections, the Air system is use less as well.

  3. #3
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Quote Originally Posted by TruThug View Post
    So I finally got the time to go to AutoZone and find out why my 'service engine soon' light has been coming/going on and off. I found out this (down below) and hopefully someone can help me fix the problem, pictures are nice since I have no clue where anything is under the hood. The guy at AutoZone focused mainly on the last two 'Probable causes' if that helps at all.

    1999 Pontiac Firebird V6 (All Stock)

    The Reason:
    Definition
    -EGR valve circuit range/performance
    Probable cause
    -Open or short circuit condition
    -Poor Electrical Connection
    -Faulty EGR value
    -Blocked EGR Passages

    Guessing the Code it has is P0404.
    Its most likely a bad EGR valve. If the wiring and connector look ok, then try replacing the valve.

    Quote Originally Posted by hippiespace View Post
    take out the EGR system. its useless 02's don't have them from the factory,Most headers don't have the EGR connections, the Air system is use less as well.
    Its a V6

  4. #4
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    Quote Originally Posted by hippiespace View Post
    take out the EGR system. its useless 02's don't have them from the factory,Most headers don't have the EGR connections, the Air system is use less as well.
    ALL 3800 series I-II-III have the EGR system...
    :\Users\Steven\Pictures\d6ftg5nh.gif


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  5. #5
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    Quote Originally Posted by TruThug View Post
    So I finally got the time to go to AutoZone and find out why my 'service engine soon' light has been coming/going on and off. I found out this (down below) and hopefully someone can help me fix the problem, pictures are nice since I have no clue where anything is under the hood. The guy at AutoZone focused mainly on the last two 'Probable causes' if that helps at all.

    1999 Pontiac Firebird V6 (All Stock)

    The Reason:
    Definition
    -EGR valve circuit range/performance
    Probable cause
    -Open or short circuit condition
    -Poor Electrical Connection
    -Faulty EGR value
    -Blocked EGR Passages

    Guessing the Code it has is P0404.
    All points the the wires being possibly melted by the EGR chimney pipe..

    Or a dead EGR..

  6. #6
    Junior Member hippiespace's Avatar
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    Quote Originally Posted by Cutlass View Post
    Its most likely a bad EGR valve. If the wiring and connector look ok, then try replacing the valve.



    Its a V6
    My bad I skipped right over that important piece of info.

  7. #7
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    Quote Originally Posted by hippiespace View Post
    take out the EGR system. its useless 02's don't have them from the factory,Most headers don't have the EGR connections, the Air system is use less as well.
    I agree with this guy!

  8. #8
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    Quote Originally Posted by mangus2k1ws6 View Post
    I agree with this guy!
    3800-II does'nt have an air (system) pump either..

    Just an EGR with a 6-7 inch chimney pipe..

    Removing it adds/does nothing for the 3800..

  9. #9
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    Quote Originally Posted by Smittro View Post
    3800-II does'nt have an air (system) pump either..

    Just an EGR with a 6-7 inch chimney pipe..

    Removing it adds/does nothing for the 3800..
    an egr recirculates the exhaust back into the motor... hence taking it out will help with air/ fuel but you will ppollute more

  10. #10
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    Quote Originally Posted by mangus2k1ws6 View Post
    an egr recirculates the exhaust back into the motor... hence taking it out will help with air/ fuel but you will ppollute more
    I know what an EGR does and is. I also know about the 3800..

    We already have a 85mm factory inlet TB..

    Again Running with or without the EGR will do nothing on the 3800..

    It will NOT pollute more..

    Because in order to run without out it you WILL need to TUNE it just so it will run right..

    Hence eliminating the code and the issues that arise from it's removel..

    It will NOT help with air/fuel anything...

    If you want help with air/fuel mixtures put a blower on it and have it tuned..
    Last edited by Smittro; 04-10-2011 at 03:51 PM.

  11. #11
    Electrical Engineer KMdef9's Avatar
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    To the OP, if smittro says it about the 3800, I would take it as law, lol. I don't think there isn't anyone on this site who knows more about them.

  12. #12
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    Quote Originally Posted by KMdef9 View Post
    To the OP, if smittro says it about the 3800, I would take it as law, lol. I don't think there isn't anyone on this site who knows more about them.
    Thanx can always use inproving..

    However, sure the removel of the EGR will keep hot exhaust gases out of the combustion.. But the entire upper and lower intakes get heat satuated because of the hot pool of coolant that sits in the LM, and the hot coolant that flows through the TB itself.. You're going to get hot air no matter what.

    So the gains from the removel of the EGR will be minimal @ best equaling pretty much nothing..

    I have yet to see or read anywhere that EGR removel on the 3800 has produced "other than stock" results..

  13. #13
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    It's also imho the reason you LS1 guys see gains from just a lid.. But the 3800?

    Negligible....

    You are'nt overcomming poor cylinder head design with removing things and/or anything bolt-on off the shelf N/A..

    That's why the l67 was invented..

    Same heads right down to the castings as the L36 with the exception that the l67 heads have bungs for the injectors to accomadate(sp) the Eaton 90's gurth..

    Springs are a slight bit harder and that's it...

  14. #14
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    That EGR will screw it up every time.

  15. #15
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    Quote Originally Posted by jwalters View Post
    That EGR will screw it up every time.
    Sure can..

    A faulty EGR can take the drivibility right out of it..

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