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This is completely normal on pretty much most new 5.0s. Mine does it, every one I test drove does it. It's the hood rattling around as people have said. I actually like the noise because it makes me feel like I'm driving a Snot Rod.

I think this is it https://static.nhtsa.gov/odi/tsbs/2023/MC-10236680-0001.pdf. Though its a major repair so probably best make sure something actually broken before bringing it in and that the shop knows what they're doing.

Yeah eco mode sometimes helps. Ive also noticed higher octane fuel (more power) makes the problem worse. Not a deal breaker, but Im assuming it's probably just the drum issue. If it gets worse, Ill have them open her up per the TSB before warranty expires. I'll get new trans fluid complementary...

Many times unfortunately.

I think it's heads up display, second row heated seats, B&O unleashed, ability to add lay flat seats, extended running boards to bedside, and optional larger wheels with CCD.

Hey James, did you ever get your transmission issues sorted out? And if so what were the symptoms. Mine is smooth except in traffic 25-50 mph, and acceleration it just likes to shift very abruptly into gear when I speed up or slow down.

Wrong. You loved the fact that there's no intercooler on this one...

It changes the rear speakers to only mid/highs. Also sets the center dash speaker to full range. In my experience this allowed a fade to the back, without any bass loss if you wire your sub to the front. A much richer but less surround type sound.

So I have one for you... Try this in forscan for the ACM (save your old config before hand) 727-01-01: 382A 15F1 **** Then set your fader all the way back to just barely touching the rear seat bottom. Turn down trebble your liking. This finally made things smooth and not overly bright...

Yup. All preference. My brother has a 17 3.5 with 100k Miles, he's had to replace spark plugs, water pump, starter, cracked driver side valve cover, and the rattling cam phasers in the the last 2 years. Most people see the 2nd generation 3.5 as pretty bullet proof past the valve cover and cam...

I think that guy you saw also removed his cats and had an aftermarket tune with high octane fuel. That will make up a lot of the difference. His breathes and drinks way better than us plebeians.

This^. Skinnier less diameter tires that are light and low rolling resistance will help way more than gearing. Any level or lift will also hurt. The 2wd's sit lower with smaller lighter tires. Most 2wds have tires < 32" which can make a 355 or 331 gear ratio more like a 373 on a Platinum 4wd...

I always noticed and thought this rattle was something around but not the engine. Heard on multiple 5.0's I've driven. I actually love it. Makes me feel like I'm driving a snot rod when I giver the beans.

I'll second @TexasTruck . I dont have mine near all the way cranked up.

I'd recommend wiring the HS10 up to the front speakers at least, especially if you haven't set a flat signal in the ACM with forscan. The rear speakers don't get full range in factory ACM configuration with the 7 Speaker system.

Family has a 3 year old platinum powerboost 4x4 with 45K miles. No major issues or services aside from a new TCU reprogram to get fordpass activated after delivery. 20.7 mpg lifetime, driven fast on factory tires. 7500 mile oil changes w/ Penzoil platinum. Drives like new. Going in for Bilstein...

Well I guess I do more looking around under my truck than for which booger to pick! I had no idea my xlt was lacking that ha! Luckily no womanz in my life at this time, so that's 1 less weekend project on the todo list ✌

Indeed! Well atleast our legal limit is better now per this.

I agree, but I think theres probably a good number approaching 100k by now and if the issue was truly something to be concerned about, we'd have someone come complaining onto the dark corners of the internet about it. Here are some high mileage 21 5.0s for sale ->...

Yup. I had lots of 5-6minute 9mpg unloaded trips in my powerboost a few winters ago. I think a block heater might have been helpful. Even in the summer if the engine was cold, trip was under 5m and not downhill, I wasn't breaking 18mpg. Overall I ended up around 22mpg when sold. She was pretty...