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LS sputtering below 3000 RPM

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  • LS sputtering below 3000 RPM

    As the title says, my car sputters below 3000 RPM. I have a full MSD ignition. I tried a new distributor without the MSD hooked up and it only seemed worse. I just tried a new throttle position sensor and that didn't fix it either. I'm thinking maybe I'm getting signal noise in the crank position sensor, cylinder position sensor, or the top dead center sensor from my main battery cable that's running to my trunk for my battery relocation. Let me know what you guys think before I go rerouting my battery cable.
    Hidin' out

  • #2
    bump! the tps didnt work?
    R.I.P. my niggaz KJ & GS! Imma BULLY BYTCH!!!!

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    • #3
      Nah, still doing it. I got those screws for you though lol.
      Hidin' out

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      • #4
        map?
        Photobucket

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        • #5
          check engine lite??

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          • #6
            Originally posted by Slicks View Post
            Nah, still doing it. I got those screws for you though lol.
            lol iight.
            R.I.P. my niggaz KJ & GS! Imma BULLY BYTCH!!!!

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            • #7
              does it run ok cruising? like partial throttle?

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              • #8
                No check engine light and it runs alright cruising. Anything more than like half throttle up until 3000 RPM it runs like crap. I forgot to mention, it idles perfectly.
                Hidin' out

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                • #9
                  Originally posted by Slicks View Post
                  No check engine light and it runs alright cruising. Anything more than like half throttle up until 3000 RPM it runs like crap. I forgot to mention, it idles perfectly.
                  huh. doesnt sound like a map issue then. it wouldnt be the tps either if it is only before 3k rpms.
                  has to be ignition man, or a sensor that influences ignition. are you running the correct computer for the LS?

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                  • #10
                    Yeah it's a virgin P75.
                    Hidin' out

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                    • #11
                      spark plugs in tha rite order?? ignition timing mayb... water in tha spark plugs..

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                      • #12
                        too much fuel.. u got after market injectors or..

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                        • #13
                          Originally posted by Slicks View Post
                          Yeah it's a virgin P75.
                          if you've already checked your grounds and what not then i would assume its something with that msd setup.
                          you do know that the oem ignition is capable of 500+ hp right? why change something that works?

                          ive seen numerous problems with the msd ignition stuff..

                          run oem ignition, chip the computer and tune it with crome, and never look back..

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                          • #14
                            Originally posted by ekrican77 View Post
                            spark plugs in tha rite order?? ignition timing mayb... water in tha spark plugs..
                            lmao if the plugs werent in the right order he would have trouble even moving the car around the yard..

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                            • #15
                              nigga shut tha fuck up.. im tired of niggas swearin dey kno it all... it will still drive if it was in tha wrong order...

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