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Thread: 5.3 IDLE issues!!

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  1. #1
    Join Date
    Mar 2009
    Location
    Hanford, CA
    Posts
    65
    there is a gasket directly under the TB that closes some vacum gaps on your intake. Or it may be the gasket under the intake. Its been 15 years or more since i had to deal with it but that fixed it for me.
    '01 Silverado ECSB - 5.3L, K&N, BONE STOCK(For now) 7.5'' Fabtech Lift on 20'' KMC XD's wrapped in 33'' Micky's

    '72 C-10 SBC - 5.3L, 4L60E, MSD, K&N - still a work in progress.

  2. #2
    Join Date
    Mar 2009
    Posts
    7
    Quote Originally Posted by JHART View Post
    there is a gasket directly under the TB that closes some vacum gaps on your intake. Or it may be the gasket under the intake. Its been 15 years or more since i had to deal with it but that fixed it for me.
    15 Years???? I hope thats a TYPO! I dont believe it to be the intake to head gaskets as they are brand new, I just checked the TB gasket and it looks fine and is not blicking anything.

  3. #3
    Join Date
    Mar 2009
    Posts
    7
    Well I figured out the problem!!!!
    Under DTC Processing Enablers if you disable any of the MAF tables P0101, P0102, P0103, the engine will not run correctly. You can disable them under MIL enablers but not Processing Enablers.
    Hope this eventually helps someone out.

  4. #4
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    well, found the DTC controls under the Engine Diag tab. Where are the other controls you speak of?
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  5. #5
    Join Date
    Mar 2009
    Location
    Hanford, CA
    Posts
    65
    Quote Originally Posted by RacerChris View Post
    15 Years???? I hope thats a TYPO! I dont believe it to be the intake to head gaskets as they are brand new, I just checked the TB gasket and it looks fine and is not blicking anything.
    mine was a 95. So yes actually more like 14 years. 2009 subtracted by 1995 makes it 14 ...lol but i always round up.

    Glad you found your issue good work.
    '01 Silverado ECSB - 5.3L, K&N, BONE STOCK(For now) 7.5'' Fabtech Lift on 20'' KMC XD's wrapped in 33'' Micky's

    '72 C-10 SBC - 5.3L, 4L60E, MSD, K&N - still a work in progress.

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