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Discussion Starter #1
For years I have experienced an intermittent vibration in my 2008 Tundra Crewcab. It happens from time to time at various speeds but usually around 50-60MPH. It has happened at neighborhood speeds. But check out the following:
When it happens, I feel it in the steering wheel, pedal, seat and my GPS bumping against the windshield.
I pull over, check everything and finding nothing, pull back into traffic and the vibration is gone!!!
That eliminates tires, suspension, steering, and a lot of other things that don't fix themselves when I stop.
I have balanced the tires, rotated the tires, balanced the driveshaft, rebuilt the brakes, checked the bed (for bed-bounce), replaced the torque converter (Toyota tech service bulletin), and just about anything else that could cause such vibration. Nothing has fixed it. I even left it with a local Service Manager to drive and he felt it, but could not pin-point the cause.
Any ideas?
 

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I had something like that in my '07 Tundra after putting brakes on. It appears that I had adjusted the parking brake shoes a click too tight. Once it warmed up, it started grabbing on the drum, causing a shudder. That was a tough one to troubleshoot because it went away after I stopped on the freeway and restarted, and it didn't do it on slower roads.
 

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Discussion Starter #3
Thanks, but I had the parking brake checked and it was not the problem. I think the problem is a speed sensor is sending a signal to the computer to pulse the brakes, thinking one wheel is sliding. Sometimes when the vibration starts and I pull over and stop, I can feel the brakes pulsing like a warped rotor, but the rotors are fine. And when I pull back out and continue driving, the vibration is gone, so it can't be a warped rotor.
 
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