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  1. tpenfield

    F-150 Transmission Issues (I think? . . . No, I thought )

    Yes, my truck has 207K miles. . . Just hoping to get some more out of it. I mostly use it for towing the boat, but it does get the call of duty for other stuff. I've only put about 1,500 miles on it in the past 2 years.
  2. tpenfield

    8.1 GXI-J Cranks but No Start w/ Diacom Logs

    As for the coolant temperature . . . when you are running the engine at idle and the engine is fully warmed, the t-stat may be fairly far open because the coolant flow is slow. An increase of the throttle will immediately cause a drop in the ECT as cooler coolant rushes in . . . as it does the...
  3. tpenfield

    F-150 Transmission Issues (I think? . . . No, I thought )

    Fingers crossed 🤞, but it is fixed. . . :) I hooked up my pancake compressor, set it to 20 (ish) psi and exercised the wastegate actuators. The right (passenger) side of the engine was fine. The wastegate moved and retracted as it should with pressure & relief. The left (driver) side, the...
  4. tpenfield

    Question(s) about replacing the foam/floor in my deep-v

    Post up some pictures if you can. Aluminum boats and foam flotation are a different animal than fiberglass boats and foam flotation. If you've had wet foam in contact with the aluminum hull, it would be best to inspect for corrosion/pits/etc.
  5. tpenfield

    F-150 Transmission Issues (I think? . . . No, I thought )

    To recap . . . I bought the truck November of 2021 and drove it from MA to CT and back to pick up a (big) trailer. I don't remember it having the flutter then. I pulled the (big) boat out of the water in November and the truck sat over the winter while I was replacing the brakes. Then in...
  6. tpenfield

    F-150 Transmission Issues (I think? . . . No, I thought )

    Yes, I just want to get rid of the flutter so the turbo runs smoothly, particularly on hills.
  7. tpenfield

    8.1 GXI-J Cranks but No Start w/ Diacom Logs

    Different spot that I was thinking, but glad you found it.
  8. tpenfield

    1989 25' Invader cabin crusier fiberglass stress cracks

    34 year old boat. . . normal went out the window a while ago. Stress cracks around the transom are usually signs of trouble.
  9. tpenfield

    8.1 GXI-J Cranks but No Start w/ Diacom Logs

    I thought the CPS was top portion of the block, just behind the recirculating pump, slightly to the starboard side.
  10. tpenfield

    8.1 GXI-J Cranks but No Start w/ Diacom Logs

    Also check the connectors to those 2 sensors to be sure they are tight, not corroded, etc.
  11. tpenfield

    8.1 GXI-J Cranks but No Start w/ Diacom Logs

    You should be able to connect to the engine and reset codes with just the ignition on and not running.
  12. tpenfield

    8.1 GXI-J Cranks but No Start w/ Diacom Logs

    I have my Diacom computer on my boat and will be there in the next few days, so will look at the recordings then. Some initial thoughts . . . Probably not going to worry about the ECT at this point, because you have some hard faults for the Crank and Cam sensors. If you clear those faults, do...
  13. tpenfield

    F-150 Transmission Issues (I think? . . . No, I thought )

    Yes, I plan on checking the pressure tubes first and the diaphragms, then the actual wastegate mechanism. It would be nice to remedy the situation, as everything else seems to be fine with the truck.
  14. tpenfield

    Boat construction question on gelcoated underdeck surfaces

    As mentioned, there are a variety of ways that fiberglass stringer systems are made and integrated into the hull. Maybe Rec Boat Holdings can share some information or photos on how their boats are made.
  15. tpenfield

    Serial number through diagnostic tool?

    I have the Rinda Diacom software and it shows the engine serial number (assuming you have a fuel injected engine of recent vintage)
  16. tpenfield

    454 7.4L Magnum 1989 Crownline Celebrity

    You have 2 threads going. Are you going both structural work and engine work? A tall order, but we are here to help.
  17. tpenfield

    F-150 Transmission Issues (I think? . . . No, I thought )

    We all have our preferences . . . I've not been happy with the GM vehicles I've owned, and have favored the Fords over the years. My understanding is that the 'flutter' or 'oscillation' as it is sometimes called is often caused by a failing actuator. My next steps are to check the wastegate...
  18. tpenfield

    F-150 Transmission Issues (I think? . . . No, I thought )

    After some delay, I have done some more research and have found a few videos of the exact noise that I have been hearing upon hard acceleration. The noise sounds like what others have diagnosed as 'wastegate flutter' My truck sounds exactly like this . . . So, this week, I will see about...
  19. tpenfield

    Twin Merc V8 and different fuel usage

    If the % difference is low, then it may be the accuracy of the calculations, etc. Maybe not worth any concern.
  20. tpenfield

    Twin Merc V8 and different fuel usage

    As a percent . . . how far off are the engines? RPM the same? Isn't the fuel usage a calculated amount (based on injector pulse and RPM)?
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