09 LT with a prob...

Discussion in 'LS, LT, LTZ' started by mint lt 09, May 14, 2018.

  1. mint lt 09

    mint lt 09 Junior Member

    Posts:
    2
    Likes Received:
    0
    Joined:
    May 13, 2018
    Location:
    usa
    hello...
    im a newby and i hope someone can give a good answer:)

    09 cobalt lt 2.2 79k 1 owner (ME) Has a bad catch up/slagtime when leaving a stop OR hard acceleration
    Changed the following..
    fuel filter
    plugs and wires
    air filter
    cleaned MAF
    ran # diff fuel injec. cleaners over 6 months of so.
    always 100% gas
    BANGIN MY HEAD HERE....
    OTHER THAN THAT CAR RUNS LIKE A SCEAMIN DEMON...ALWAYS HAS.

    DEALER SAYS IN SPEC BLA BLA BLA
    tps is in the tank with pump..NIIIICE

    How do i check fuel pressure? Im starting to think its a failing fuel pump..which was replaced with the recall BS cpl yrs back.
    I have scanned with my obd but not sure how to read certain % of certain things like M<AF MAP TPS etc
    Any place i can find SPECS online?
    THANK YOU IN ADVANCE FOR SOLID FEEDBACK WITH THIS PROBLEM!:)
     
  2. steveo314

    steveo314 Junior Member

    Posts:
    2
    Likes Received:
    0
    Joined:
    Mar 9, 2016
    Location:
    St Louis, MO
    This is an issue that just came up on my '10 LT. I have 124k. I just did another fuel filter and plugs/wires.
     
  3. 1/4 million

    1/4 million Junior Member

    Posts:
    7
    Likes Received:
    1
    Joined:
    Apr 1, 2015
    Location:
    Guadalupe River SP, Texas
    Could it be a bad Cat?
    My wife had that same issue with her 08 Malibu with the 2.4l, turned out to be a bad Cat. that was around 80k. IDK something fairly easy to check just a few bolts and you can remove the Cat and look to see if it is clogged. I replaced mine with a stainless ZZP Cat back at 250K it did make a big difference with performance, although my Cat was fine the flex portion cracked.
     

Share This Page