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Hum or Vibration during acceleration at Highway Speeds

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Old 03-09-2010, 05:20 PM   #1
mhagen [OP] mhagen is offline
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Hum or Vibration during acceleration at Highway Speeds

I am a new user and figured I would ask this question before I went down to the dealer. I have a 2008 Dual Cab 4x4 Long bed with automatic transmission and 4.0. I purchased used and currently have about 20k mikes.

Anyways, I have a hum...probably more of a vibration that occurs only during acceleration and only at highway speeds. It seems to occur around 2100 rpm and will disappear when I shift to 4th and the RPM increases. It will also disappear if I continue to accelerate in 5th and the rpm increases above 2400-2500rpm.

I could happen at other times, but I really notice it under the above conditions.

Like the Truck, but it is really annoying as I spend most of my time at these conditions.
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Old 03-09-2010, 05:22 PM   #2
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sounds like a bearing in the transmisson. you have a manual right..?
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Old 03-09-2010, 05:23 PM   #3
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i have a slight vibration at about 100-110 kms/hr about 2100 rpm as well, i can feel it in the floor with my left foot on the rest...is this what u are feeling? I think its normal, ive learned to live with it......mine is an automatic
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Old 03-09-2010, 05:24 PM   #4
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Quote:
Originally Posted by tammikm View Post
i have a slight vibration at about 100-110 kms/hr about 2100 rpm as well, i can feel it in the floor with my left foot on the rest...is this what u are feeling? I think its normal, ive learned to live with it......mine is an automatic
yours sounds like a wheel bearing.
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Old 03-09-2010, 05:28 PM   #5
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It's not normal. Mine doesn't do it and it shouldn't.
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Old 03-09-2010, 05:30 PM   #6
mhagen [OP] mhagen is offline
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It an automatic. I don't feel anything on the floor
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Old 03-15-2010, 07:40 AM   #7
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mine is an auto with only 4400 miles, 2010 prerunner, it hums at 1900 to 2000 or so as well
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Old 03-15-2010, 09:25 AM   #8
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Quote:
Originally Posted by kulitxplod View Post
mine is an auto with only 4400 miles, 2010 prerunner, it hums at 1900 to 2000 or so as well
Mine too at 60 mph give ir take 3
miles. I've assumed the tires. In my case if it where a bearing it would do it accross the entire speed range

like Honda accord 2003 my wife owned -- there is alot of road noise that comes up from the road. I want to sound proof the floor board
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Old 01-29-2011, 08:38 AM   #9
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If you search some you will likely find that this is pretty normal on V6 automatics. Toyota has a TSB for the shuddering around 25MPH (supposedly a new rear trans mount fixes it) but I have found nothing about the 1800-2100 rpm vibration in 5th. My 05 does it too. It's rather annoying, but I suspect they all do it and only some of us notice.
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Old 01-29-2011, 08:47 AM   #10
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i have an 09 or and i have always had a slight viberation that could be felt in the steering wheel and the gas pedal. If i turn my wheel slightly one way or the other i can find the sweet spot where there is no viberation. i took it to the dealer when i first got it and they wernt able to find anything.. so i just live with it
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