2007 ZR6 - Throttle Position Sensor issue??????

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  • layneherring
    • Sep 2011
    • 16

    • Lake Keystone, OK (Tulsa)

    • 2007 SV-211 TE ZR6
    #1

    2007 ZR6 - Throttle Position Sensor issue??????

    Searched hard but can't find anything like I am having. 2007 SV211 with ZR6. Fresh non eth fuel. New fuel filter. Advance to full throttle and engine will go to 3000 rpm but not further (throttle is fully advanced). Will stay at 3000 rpm for approx 15 - 45 seconds then finally it is like you flipped a switch and bam it puts you back in your seat like a bat and goes to 5000 rpm. Throttle off to 3500 rpm and still feel lttle surging every once in a while. Perfect pass turned off at all times, but it almost feels like when PP takes over feels when you use that. Most times when coming out of whole I can't get full rpm until the 30 or 40 second wait time. Seems to become less of an issue the longer boat runs, but still noticeable. After turning off engine then back on seems to be worse for a while. Could it be something in the fly by wire system? Any thoughts appreciated. Thank you.

    one more maybe not related thought. Perfect pass not performing as well as last year when engaged and seems to be really varying at holding constant speed (i.e. set at 18 mph may let it down to 16 then up to 21mph)
    Tags: None
  • wakeskier
    • Oct 2007
    • 77

    • Massachusetts

    • 2008 Super Air Nautique 210
    #2
    Does you check engine light come on at all?
    I have a 2007 220 w/ZR6 and the check engine light was coming on intermittently, I had the codes read and it was the TPS.
    There's 2 voltage readings and both of mine were just out of spec, the shop adjusted them back in and the light hasn't come back.
    I never experienced any performance issues though, even with the light on.
    Good luck with your boat

    Comment

    • layneherring
      • Sep 2011
      • 16

      • Lake Keystone, OK (Tulsa)

      • 2007 SV-211 TE ZR6
      #3
      Never have had a check engine light. Performance issue/RPM issue only. Just so strange to have a max rpm of 3,000 at full throttle, then it will be like you flip a switch and it will increase RPM to 4,800 and take off. Makes it quite interesting getting up on a slalom.
      Thanks for the reply.

      Comment

      • layneherring
        • Sep 2011
        • 16

        • Lake Keystone, OK (Tulsa)

        • 2007 SV-211 TE ZR6
        #4
        Thought I would post end results. Fuel filter replacement did not yield immediate resolution of problem. Continued to occur randomly. Got down to where I could put 20 gallons of fresh fuel (when de winterinzing was only able to add 4 gallons of fresh fuel). Problem seemed to slowly go away and performance is not great. In my opinion I did not add enought Stabil to the fuel for winter storage (which was longer this time due to water levels, Sept - June). Will in the future store with minimal fuel (non ethanol of course) and plenty of Stabil, adding fresh fuel when de winterizing. Thanks for the reply.

        Comment

        • hotrod508
          • May 2010
          • 64


          #5
          My 07 SAN 236 did the same thing.... The TPS sensor gets wet from water dripping off the motor hatch, this changes the can bus signal to the motor, makes a irratic signal. You can dry it out with a hair dryer... You also need to dry the plug connector. In the end, i replaced it and smeared silicone along the outside of the TPS case. Anything that changes the flow of the signal can change the way the computer reads the signal so I avoided dielectric grease.

          Sent from my SAMSUNG-SGH-I337 using Tapatalk 2

          Comment

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