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Recent content by Superdaveusa

  1. S

    Engine acts like it is in limp mode.

    Ok Changed impeller and ran in a large tub. Did get return water from exhaust. Again idled fine, when throttle increased it lopes like guardian mode. Also heated up quickly according to temp gauge got to 175 and I shut it down, but the exhaust manifold could still be touched, was very warm, but...
  2. S

    Engine acts like it is in limp mode.

    it does not have a closed cooling system. Honestly i didnt look at the transom, was in the boat. Will run again after i change impeller.
  3. S

    Engine acts like it is in limp mode.

    Horn test comes on with key on , then goes off. I have ordered a impeller kit and will get that done.
  4. S

    Engine acts like it is in limp mode.

    Ok, ran this am. With key off 0 pressure on fuel rail. Key on 35 idle 35-38 tried to get to 2000 rpm before lope it was 40-42 then went to limp mode. Only ran about 5 mins and temp gauge was at 180+ so i turned it off. Seems like water pump is not right, shouldnt get that high in 5 mins on hose...
  5. S

    Engine acts like it is in limp mode.

    The fuel when separator removed was pristine. So i will try to check the pressure at off and idle and as high an RPM as motor will let me. Report back when complete
  6. S

    Engine acts like it is in limp mode.

    It is a 2013 3.0MPI with 175 hours on it SN2A047033. I have the manual, but can't figure what is wrong. No codes, starts right up, but wont increase throttle without going into some sort of guardian mode. So if i hook up the pressure gauges, I won't be able to do WOT and not sure i can do...
  7. S

    Engine acts like it is in limp mode.

    It is a 2013 3.0MPI with 175 hours on it SN2A047033. I have the manual, but can't figure what is wrong. No codes, starts right up, but wont increase withput going into some sort of g
  8. S

    Engine acts like it is in limp mode.

    Could some short of switch like, neutral safety or tilt being causing this?
  9. S

    Engine acts like it is in limp mode.

    2016 3.0 Mercrusier Alpha one Drive Fuel water separator filter just changed. Not sure it could be overheating, no alarms and it happens when you start it. Fuel injected
  10. S

    Engine acts like it is in limp mode.

    Brought to a shop to look for codes, none detected.
  11. S

    Engine acts like it is in limp mode.

    Started with a left hand turn while out running the boat. Will start right up and idle perfectly. When applying throttle, engine will not take full throttle. It will lope like in limp mode. All filters have been changed. TPS was changed, no effect. Could it be a tilt sensor? Where should i look...
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