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  1. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    How many of these .rec files are under no load?
  2. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    I don't think shutting down an injector would give much useful info. I wouldn't know what to look for. But if you want to try I don't think it would cause problems and might be useful. It's very unlikely the flexible fuel line is collapsing, but possible and would explain your issue. I don't...
  3. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    @Lpgc thank you for taking an interest in this issue, more eyes looking at a problem always help. You can look at the files if you want. Just go to rinda.com and click on the updates tab. Click the button next to Diacom and then click the download button. This will let you install Diacom...
  4. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    I can only see two inputs to the ECM that act weird. MAP and fuel pressure. It was a toss up as which I would recommend first. My call was the MAP, because of the "gold rule" when a tech is guessing --- Pick the cheapest and easiest first. I think it's now time to replace the fuel pressure...
  5. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    Based on what I see in these files. I can see two inputs and one output go crazy. The inputs are fuel pressure and MAP. The output is injector pulse width. The fuel pressure drops at the same time manifold pressure increases. Both of them happen at the same time. The injector pulse width seems...
  6. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    I don't know how to convert these into .rec filed. Can anyone help me?
  7. M

    Need help: Bizarre Bravo III freshwater galvanic corrosion quandry

    Back in the early 2000s the dealer I worked for had a rash of these problems --- well only 8 but it seemed like a lot at the time --- so I had to learn. The first and best resource I found was from Mercury Marine, a 80 page manual part number 90-8M0167072 and it's cheap $20.00. It does a great...
  8. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    Earlier I saw a bit of discussion about TCP TSP actual and commanded. Because trouble shooting odd issues like this usually requires understanding how and why the ECM makes the decisions it does, here is a little explanation. ETC = electronic throttle control, "fly by wire" The Speed Based...
  9. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    DTC 0087 Data valid but pressure below 20 PSI (1.37 BAR) for more than 3 seconds Why Volvo picked below 20 PSI to set this code I have no idea. I doubt 20 PSI is even enough to idle this engine. But that's what they chose so unless the ECM sees below 20 PSI for more than 3 seconds ---- no code...
  10. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    I don't agree. Could be a ECM driver output. Could even be something fuel related. I have seen a rubber fuel line that had a little flap of rubber come loose inside. At low fuel flow rates, everything was fine. But once the flow increased enough that flap would move and restrict the flow enough...
  11. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    I don't see any .rec files. Your battery had a resting voltage of 12.1v this indicates a battery with about 50% charge. Cranking dropped that to 9.4v. 9.6v is considered bare minimum. I don't know if the battery you have now is causing or contributing to your current problems, but it can't be...
  12. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    Only way I can think of is to monitor the PWM with a scope. Guessing it just goes back to HPFP inlet. If it leaks past the pump piston. I think this is unlikely. Yes you would smell it. Not at the dipstick unless you first blow down the tube to clear the oil that just sits there, open the oil...
  13. M

    2020 VolvoPenta Gen5 Fuel Trim Faults

    The emissions warranty is thru Volvo and runs 5 years or 350 hours. So the issue you're having may still be covered. Only Volvo 1 800-522-1959 or a dealer can advise you. Yes, you do need to talk to a dealer. When I run your serial number - this comes up. Your product is subject to a recall...
  14. M

    convert 2005 5.0 GXI to 2012 5.7 GIC

    No idea without S/Ns. Take the serial numbers from both engines and start comparing part numbers to Y pipes TSK and other points of connection. Serial numbers will also be needed to determine wiring, controls and gauges.
  15. M

    2020 VolvoPenta Gen5 Fuel Trim Faults

    A full model number, spec number or preferably the engine serial number is needed. But if you have good fuel pressure at the time of the fault, you could swap the pre O2 sensors from side to side and see if the fault moves. Just be careful how much you run this, lean is bad if you have cats...
  16. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    I just brought up the DTC 0088 because it's the only place the fuel control solenoid is mentioned. I found it somewhat strange that it wasn't listed as a possibility for a low pressure DTC. Maybe Volvo feels it can't fail that way? The low pressure DTC only sets at a very low pressure. Each...
  17. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    It would have been nice if there was an issue with the fuel feed pump, it would fit so nice with the symptoms. But your testing rules that out. Might be better if you posted the .rec files. the two you just posted are just a snapshot of a moment in time. I can't see much in them. The first...
  18. M

    new fitting for drive oil res for older boats

    I don't know about other parts of the world. But here in MN, especially this time of year when the Muskrats teeth are growing and hurting them. Suggest that you wrap this hose with a S.S. spring or use the S.S. braided trim lines. Adding a gear lube bottle is a good idea.
  19. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    Happy to help when I can. Please post the resolution when you find it.
  20. M

    Volvo Penta V6-240 Fuel High Pressure Dropping to Zero

    I'm pretty sure the HPFP is PWM with a fuel pump solenoid valve. The wires for it are in the harness and the diagram shows a HS and LS at the ECM. This thread has been a learning experience for me. Had no idea there was a pressure relief in the high pressure side, but it makes sense because this...
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