Recent content by Toddavid

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    Humor me with your whine theories, V8-380-CD

    When running cold, I‘ve been hearing a somewhat faint mid-octave whine this season, only happens when under load. Not as high pitched as fuel pump (plenty of direct experience with that issue). Doesn‘t change in pitch, slightly louder at various higher rpms, not there at idle. After heat...
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    Trim pump or rams issue?

    Are you sure it needs to be up? This post says the opposite: https://forums.iboats.com/threads/checking-oil-for-trim-motor-volvo-penta.535610/post-3853403 And if fluid was leaking past the piston seals, shouldn’t that cause the drive to slowly drop on its own when partially trimmed down? It...
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    Trim pump or rams issue?

    Last season I hit a submerged log at speed, ripped the outdrive off. No hull damage, so a brand new DPS-B outdrive, transom assembly, rams, etc. were installed by a VP authorized dealer/repair center. About halfway through this season, I started to notice that despite trimming up when on plane...
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    Alternator or switch?

    So it seems that it was neither. After having the problem resurface next time out, I decided to start taking things apart and ohming things out. Everything was tight and conductive until I got to the auxiliary ground strap on the alternator body. It was just barely loose. I cleaned it and...
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    Alternator or switch?

    Yeah, the correlation with the switch turn was interesting. But it never cut power all the way when voltage was dropping, so it was more of not understanding how the exciter circuitry worked on a more modern boat. Does the 12v reference signal to the alternator run through the switch? I’m...
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    Alternator or switch?

    Considering how buried the starter is in my engine bay, that might be a challenge. Time to break out the endoscope…
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    Alternator or switch?

    Typical failure. Went to turn it one day, and it broke apart in my hand. I even carry a spare with me now.
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    Alternator or switch?

    Ok, thanks for this explanation. It’s behaving as if it has a faulty exciter circuit, which on an “old school” alternator would be via the alternator dash light. How is the exciter circuitry handled on newer alternators?
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    Alternator or switch?

    I am reading this voltage via a scan tool and also via the on board digital display (they correlate).
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    Alternator or switch?

    I have a load tester, and both batteries test fine.
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    Alternator or switch?

    2014 Chaparral with 380-C-D V8. 2 batteries, less than 2 years old. Last season, I noticed my voltage would sometimes ride in the high 12v range. Never had a dead battery, always cranked strong. I know the alternator from this era is supposed to be a “smart“ one, where charging output is...
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    Is this a reasonable quote?

    That’s one way to remove the gimbal bearing…
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    2012 VP 300 C-A Exhaust manifolds getting too hot - DTC 441 & 442

    Sensors reading air temp are not reading actual coolant temp or affected metal temp. The sensor is sitting in an air pocket which appears cooler than the surrounding metal because air does not transfer heat as effectively as coolant/water.
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    DPS pressure and vac testing

    20hrs later and I’m still battling this issue. It takes three or four outings for the issue to present itself as cloudy drive oil (I pull the props and start to drain). Still no oil leaking out, just a bit of water being sucked in from somewhere. Each time I see milky oil, I change it. That’s...
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    VP GXI 5.0 Running Bad, Plugs Fouled on Port Side Only

    Check the main grounds, too. The problem being contained to one bank, plus the persistent temp sensor codes may suggest a ground issue confusing the ECU. I think your main ground location is port side back of cylinder head.
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