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Problem after Head install

This is a discussion on Problem after Head install within the Internal Engine forums, part of the LSx Technical Help Section category; Just put on a set of Texas speed heads on my 05 5.3. When i started it, it sounds like ...

  1. #1
    Junior Member
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    2005 Silverado Z71

    Problem after Head install

    Just put on a set of Texas speed heads on my 05 5.3. When i started it, it sounds like its missing, and wont hardly run. Engine idles real rough. Check engine light came on, scanned said it was PO101. Can anyone help?

  2. #2
    Member importhater81's Avatar
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    02 ss camaro

    That's a mass airflow code.Was it just a head swap?Did you change cam as well?Might need a tune.

  3. #3
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    2005 Silverado Z71

    No. Just head swap.

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    Veteran 0rion's Avatar
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    06 duramax

    sure you don't have the maf unplugged? Check for loose hoses too.

  5. #5
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    2005 Silverado Z71

    Stock push rods were to long.Changed to 7.350 all better now.

  6. #6
    Member importhater81's Avatar
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    No shit!Good to hear you figured it out!

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