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  1. zak99b5

    inconvenience or safety feature?

    This feature seems pretty useless on a vehicle with an auto tranny. Is there something I’m not getting?
  2. zak99b5

    2019 Expy XLT halogen to led swap.

    Where are people finding Morimotos in the HB3 size (stupid choice on Ford's part, that)? I’ve looked on Amazon and on the Morimoto site and can’t find them.
  3. zak99b5

    Help!! Dealership doesn’t know what’s wrong

    If the two low cylinders are next to each other, it could be the head gasket.
  4. zak99b5

    Hellwig 7696 is installed on 2024 Expedition

    Just ordered a Hellwig rear bar for my Max, as we experience the wobble and want it gone. I won’t do a front bar, because stiffening up the front will increase under steer. Are upgraded links for the rear bar a necessity? If so, are there any links with heim joints? Wouldn’t be terribly hard...
  5. zak99b5

    Transmission fluid change interval

    With the dealer, at least there’s a chance they’ll use the correct fluid. Places like JiffyLube, not so much. I’d bet they have one “universal” tranny fluid for all makes & models.
  6. zak99b5

    Transmission fluid change interval

    It didn’t seem too different from other trans fluid changes I’ve done on modern-ish autos (not too many as I daily and prefer cars with three pedals). Sure, I wish it had a drain plug and a long dipstick & tube you could fill from the engine bay, but it’s not a bad or terribly hard job overall...
  7. zak99b5

    Transmission fluid change interval

    Just who you want servicing your trans—a pimply teenager who’s watching TikToks while he does it.
  8. zak99b5

    2020 Plat Max Transmission Normal Temps

    With my 180° tstat, I just drove for a little over 4 hours on hilly interstate, 75-80 mph. Tranny temp never went out of the 170°s. Not heavily loaded.
  9. zak99b5

    Transmission fluid change interval

    I changed my tranny fluid out at around 70k. Followed ford tech makuloko's video. It wasn’t too bad at all. Got the fluid & filter from Rockauto, by far the cheapest place. Torque spec for the pan bolts is very low—felt light hand-tight at best. I felt they should be a bit tighter, but...
  10. zak99b5

    2020 Plat Max Transmission Normal Temps

    I just filled it from the degas bottle and squeezed the hoses until it wouldn’t take any more. Started it up and let it get to op temp. It sucked a bit more in from the degas bottle, and I then topped it up again. Been fine ever since.
  11. zak99b5

    2020 Plat Max Transmission Normal Temps

    I put in the 180° tstat myself. Took less than an hour, and the gallon of premixed coolant I bought at the dealer was enough to replace what was lost. My original (brass collar) tstat was sticking, causing temp spikes to over 235° on the highway, loaded but not towing. Temps are now normal and...
  12. zak99b5

    new 2019 expy platinum owner - no HD towing - help with controller

    I bought a Ford trailer brake controller. The plug for it is not behind the coin holder but a little cubby, right of steering wheel and left of the center console. I tried a generic oem-style one off Amazon, but it didn't work and caused a parasitic drain. I also had to enable it with Forscan.
  13. zak99b5

    Ford quietly redesigned the thermostat in 2022...replace it

    Just looked at the link you provided—I would not buy that thermostat. It’s got the brass tail piece, which on my original one would bind, causing temps to rise. Looked in my Amazon history, and there it was. Part number is RT1258, $24.
  14. zak99b5

    Ford quietly redesigned the thermostat in 2022...replace it

    Yes. Original is a brass piece. Comparing the two before I installed the new one, I noticed the plastic tail piece slid smoothly. The brass piece would bind sometimes. Not sure if that was causing my higher temps (and warning on dash), but it makes sense.
  15. zak99b5

    Ford quietly redesigned the thermostat in 2022...replace it

    I don’t remember exactly where I bought it, but it was not on eBay. Thinking Rock Auto or Amazon?. It's a Motorcraft part.
  16. zak99b5

    What Have You Done to Your 4th Gen This Week?

    Changed out the atf with my son today. Took a bit longer than anticipated, but that’s ok. Truck has 71k on it, and not all shifts were great. A lag going into 8th like all the time. Some hard engagement of D or R, and also sometimes a delay when switching between D and R. Wasn’t too messy...
  17. zak99b5

    Ford quietly redesigned the thermostat in 2022...replace it

    I bought the gasket separate. My original one (was sticking closed) was 195*. Replaced it with 180*. I was under the impression that it had a 190*, so I figured ten degrees cooler would help but not be too different. That said, I am totally happy with the 180*.
  18. zak99b5

    Preparing for doing first oil change myself

    Not sure if my 2020 is different, but oil change was a breeze. Put it up on ramps, regular drain plug (it’s so easy a Fumoto valve seems silly). There’s a little trough under the oil filter that will drain toward the back (on ramps/lifted at the front) or to the front of the car if it’s...
  19. zak99b5

    Temp Spike On Highway Hill

    Drove the family 5 hours away to the Jersey shore. Same 6 people with luggage and roof rack. Zero temp alerts on hills. Also, the tranny temp was sitting at 189-190*. Never went above 190*, and it did not fluctuate with acceleration/deceleration as it did with the old t stat. I think the old...
  20. zak99b5

    Temp Spike On Highway Hill

    Good to know, but my temps were spiking at constant speed going up hills. Not the driving you describe. I did the heat on full and rechecked the coolant level. All seems good. I have not seen the rad fans come on with it idling (a/c off of course), even letting it sit for 5-10 mins after...
  21. zak99b5

    Temp Spike On Highway Hill

    Got the new t stat in today. Could not for the life of my find the petcock on the rad, so I just let all the coolant come out when I pulled the t stat. Made sure to install the new with the jiggle valve at the top, which is how the original was. Original is actually a 195*, part no...
  22. zak99b5

    Temp Spike On Highway Hill

    Did not get a chance to install the new t stat before the camping trip with the rain. Driving up to the campground, me and three middle schoolers in the car with gear and towing a 10’ box pop up trailer, I was watching the temps. It’s a 70 mile trip, so 1 1/2 hours. Kept speed around 70-75...
  23. zak99b5

    Trans fluid change that won't end..... Rant alert

    Hmm. About to change my tranny fluid, and I watched the Ford Tech Makuloco video on it. He says the gasket is totally reusable, lasts the life of the tranny. Sure it’s not the cooler seals? Those he said need to be replaced.
  24. zak99b5

    Temp Spike On Highway Hill

    New 180* t stat should be coming today. Next Wednesday I tow my smaller pop up camper up north for a trip. I’ll monitor the trans temp since I don’t have the numerical display of coolant temp above the bar.
  25. zak99b5

    Temp Spike On Highway Hill

    I forgot to add that I checked the trans temp when I saw the near-overheat happen, and the tranny was at 210*, which seems normal, and indicates to me that I wasn’t working the truck too hard.

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