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Lariat 511A
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Discussion Starter · #1 ·
anyone experience or know if normal for there to be a hmm,, how to explain this, it is as if i am running on slightly bumpy road or more accurate as if the motors are shuddering only at 77km to 85km, there is no noises just a feeling of shuddering, my wife said do we have a flat tire the first time. As far as I recall it has always done this so i felt it was maybe a harmonic imbalance of sort at that particular speed. I am not finding anyone else mentioning this.
 

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Tesla Y, Cadillac ELR, Rivian R1T, Chevrolet Spark EV
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anyone experience or know if normal for there to be a hmm,, how to explain this, it is as if i am running on slightly bumpy road or more accurate as if the motors are shuddering only at 77km to 85km, there is no noises just a feeling of shuddering, my wife said do we have a flat tire the first time. As far as I recall it has always done this so i felt it was maybe a harmonic imbalance of sort at that particular speed. I am not finding anyone else mentioning this.
Nope. Not normal. Maybe a wheel a little out of balance?
 

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2021 Mustang Mach E First Edition, 2016 Nissan Leaf, 2003 Toyota Tacoma, F-150 Lightning Lariat ER
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I'm with @R.I.P. That sounds like a tire out of balance. Do you get this consistently on all roads when traveling at that speed?
 

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Discussion Starter · #5 ·
it comes and goes I will see if it is a tire balance thing or not that is easy enough to check, does not happen all the time either and more aggressive on the make it go pedal also disappears but speed climbs out of that range fast too.
 

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Discussion Starter · #6 ·
I have the truck now booked in I suspect this is a bad motor or controller definitely not wheel balance as I can take it out 1 pedal driving and coast at those speeds and it is smooth but as soon as i put any power into it it is a very bad shudder as if you are driving on a bumpy road, I hope motors are not common to go so easy as I thought electric motors are pretty much SUPER reliable in general. I noticed in sport mode the problem got 50 percent better which is weird also. I also noticed if you power through that speed range with more aggressive acceleration it does not shudder at all so maybe its more the motors controller doing something weird with the juice its giving the motors.
 

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Discussion Starter · #7 ·
Ok truck was booked in for this problem tomorrow Jan 19th BUTTTT.... Ford did an update on my truck last night and this problem is gone, WHAT.... yes it is gone I drove it all day (250km) trying to make it happen as I know what range to aggravate it and nothing, it was smooth. Ford is learning fast it seems from tesla and they fixed my truck with an over the air update NICE!. I don't know if it was coincidence the timing of this update or they could see the SN number booked into the dealer? No Idea but it is fixed Thank you!
 
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