Recent content by 99WhiteC5Coupe

  1. 9

    What would you do to go from 200k to 300k?

    Rear (and front if equipped) differential fluid change. Transmission fluid and filter change (not flush). Engine air filter. Engine PCV valve. Engine coolant change.
  2. 9

    2015 Expedition 3.5 EcoBoost – slow coolant leak at driver-side turbo, looking for input

    I bought a new 2015 Expedition Limited 4x4. Never wrecked and passenger use only (no towing). One of the turbo coolant lines began to leak coolant. I had the Ford Premium ESP, which covered the repair. (At the same time, the engine vacuum pump began to leak oil - also repaired). This was in...
  3. 9

    2018 - 2022 Expedition & Navigator Safety Recall

    Ford and Lincoln are recalling 420,000 2018 - 2022 Ford Expedition and Lincoln Navigator models for a seatbelt safety defect: https://fordauthority.com/2026/06/420k-ford-expedition-lincoln-navigator-suvs-recalled-over-seat-belt-issue/
  4. 9

    Daughter's '15 going into limp mode, but is ok after re-starting (for awhile).

    https://www.youtube.com/watch?v=Gr4CX8sNUns
  5. 9

    2026 Wiring Diagrams

    Why did your organization buy three new Expeditions if the tailgate is not suitable for your gear?
  6. 9

    Daughter's '15 going into limp mode, but is ok after re-starting (for awhile).

    Have you checked the battery terminal connectors and battery posts to ensure they are clean and tight? Are you SURE the battery is in good condition? If was common for the positive battery terminal and connector to corrode due to battery fume leakage and the red vinyl cover over the post. I...
  7. 9

    Transmission got hot - fluid everywhere

    From afar - if the transmission fluid cooler had an obstruction, it had to come from inside the transmission. I suspect with the overheat, fluid loss, and obstruction in the cooler - that you will have more problems soon with the transmission.
  8. 9

    Keeping radio on at drive-in.

    I don’t have an answer - but wouldn’t you run-down the vehicle’s battery if you used it for hours while watching a movie at the drive-in?
  9. 9

    1st Gen Eddie Bauer - Exterior Trim Color

    AQ - Arizona Beige
  10. 9

    e-15

    The increase in ethanol percentage does not increase or decrease the octane rating. However, ethanol has less energy per volume, compared to the same volume of gasoline (about 30% less). This results in reduced fuel mileage. If you use mid grade gasoline that also has an increased ethanol...
  11. 9

    Rear A/C not cold

    Or your rear HVAC temperature actuator is not working properly, allowing heat to mix with the a/c cold air. The a/c system is on one refrigerant charge. If the front is cold - the rear evaporator would be on the same charge. It is possible the rear evaporator has clogged fins, but very...
  12. 9

    2019 Expy AC fan briefly surges during acceleration; Fixed-loose turbo inlet pipe

    There was probably a vacuum check valve in the vacuum supply that was damaged or disconnected during the work. OR - an IWE vacuum line damaged or left disconnected. The vacuum check valve prevents a momentary loss of vacuum to the HVAC system. A leaking IWE vacuum line will cause vacuum drop...
  13. 9

    Start with foot on brake

    I don’t have an answer - but I’m curious. Why would you want to defeat this safety interlock system for starting the engine?
  14. 9

    Why won't it start.

    You have a bad battery, probably with one or more bad cells.
  15. 9

    roaring noise

    Does the engine have electric radiator cooling fans, or does it have a belt driven cooling fan with a coupling that engages with speed? The mechanical fan coupling can fail and cause a roaring noise.
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