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Thread: LNF TPS Issue

  1. #1
    Potential Tuner
    Join Date
    Dec 2015
    Posts
    8

    LNF TPS Issue

    Greetings team, below is a log of my 2009 cobalt ss/tc. The car is registering at 50% tps at all times. Whether at a dead stop or in a WOT pull. Attached is my log any insight or similar issues? 4.hpl

  2. #2
    Advanced Tuner
    Join Date
    Sep 2006
    Location
    Arizona
    Posts
    600
    Any codes? You either had a fault reading the TPS or you potentially have a bad throttle body. ECU reads voltage and not actual physical throttle position, so it's possible your throttle works but the TPS is passing back the wrong signals.

  3. #3
    Potential Tuner
    Join Date
    Dec 2015
    Posts
    8
    No codes at all. What would you recommend ?

  4. #4
    Senior Tuner
    Join Date
    Apr 2007
    Posts
    1,104
    post the tune.
    The most hated, make the most power.
    93 Ranger. 5.3 D1X. 1069hp.

  5. #5
    Potential Tuner
    Join Date
    Dec 2015
    Posts
    8
    CobaltGMPPTUNE.hpt

    Tune attached

  6. #6
    Advanced Tuner
    Join Date
    Sep 2006
    Location
    Arizona
    Posts
    600
    Other than one Optimum Spark table, your tune matches the other GMPP Cobalt Tunes I have.

    Your log definitely shows a lack of throttle position variation. I'd be looking at mechincal/electrical causes. **Is the mic on?!**
    Last edited by PSYKOSTEVO; 01-15-2016 at 12:19 PM.