2021 Vibration at 65MPH
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Cross-Country
Joined: Jan 2008
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2021 Vibration at 65MPH
2021 F150 Crew Lariat 3.5, has a vibration at 63-65 MPH. I brought it in for service several months ago, and the dealer said the trans was down 2 quarts. After that it felt fine, but I can hear and feel the vibration again. Has anyone else experienced this before?
Cross-Country
Joined: Feb 2024
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From: Wsetern Colorado
Down Two Quarts is worrisome. Did they say where the two quarts went? A half gallon is a lot of "leakage", especially trans fluid. That stuff gets everywhere. Did you see puddles? I'm guessing the vibration is not the issue, but the leak is. Vibration ... add two quarts ... vibration gone ... vibration comes back. Guessing you are down again.
Cross-Country
Joined: Feb 2024
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From: Wsetern Colorado
The fluid has to be going somewhere ... unless there was a prior leak and the PO didn't refill after repairing the leak. The fact that after filling the vibration came back, I would keep an eye on the fluid level.
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Cross-Country
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At 50,000, miles is the truck ready for the fluid to be drained completely (13 quarts), or just a pan drop (6-7 quarts)? I don’t know why they didn’t offer this when I brought it in. It does have an extended warranty to 75,000 miles.
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Cross-Country
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Refreshing this post.
Any ideas on the cause for the vibration between 60-65 mph? Dealer said 2 tires were defective, so 4 new Goodyear’s were just mounted. Problem still exists. No error codes found. 2021 Lariat 50K miles.
Any ideas on the cause for the vibration between 60-65 mph? Dealer said 2 tires were defective, so 4 new Goodyear’s were just mounted. Problem still exists. No error codes found. 2021 Lariat 50K miles.
Cross-Country
Joined: Apr 2008
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I had some noticeable but minor vibrations at 1100-1200 rpm. They went away after I had my transfer case and front and rear differentials flushed.
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Tuned
Joined: Apr 2015
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From: N.E.Indiana
finding vibrations online is near impossible but a couple things. Does it feel like it's in the seat or more in steering wheel, hard to tell if it's 4wd but more in seat would point me to rear of truck while more in steering wheel says front end. Could be driveshaft. I see you're trying to move on from trans fluid being low but I'll just say I've had 2 new off lot 10 speeds and both were delivered to me brand new low on fluid that I found and made the fill them. You probably don't have a leak and not likely hurt from being low. Jim
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Cross-Country
Joined: Jan 2008
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As mentioned earlier, dropping it out of 10th gear should be looked at.
Tuned
Joined: Apr 2015
Posts: 273
Likes: 66
From: N.E.Indiana
So if you drop it to idle it goes away? That has to be engine or perhaps torque converter related. I had a performance rebuild on a Dodge with Cummins years ago that shook like crazy at highway speeds, it took them having the trans out twice before they would listen to me and change the torque converter. Fixed it. I hope yours is way easier to find! Jim