Question about 2001 Toyota Tacoma

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Vibration from under the pickup at all times, but especially when light braking at hiway speeds

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  • dschulz312 Jun 30, 2009

    In my problem I mentioned the vibration exists at most times, but often (this means not always) becoming more pronounced upon braking. This is NOT rotors; coming from below the truck, not the brake area. A stop slowly at a stoplight does not produce pulsations indicative of uneven rotors. Thanks for trying. appreciate the response. --I did look at rotors, that was too easy not to do.

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Brake vibes are most likely warped front rotors you can have them machined or rep;ace them

Posted on Jun 30, 2009

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From what you have described the disc rotors on the vehicle are distorted and could be fairly badly distorted if they have been subjected to excessive temperatures at any time.

This will translate into a pulsation in the brake pedal - especially noticeable when you brake at speeds above about 40mph. At 60 mph - as you found - you cannot miss it. At higher speeds you will also get some vibration through the steering wheel once you brake.

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If you had a wheel balance problem on the car (rectified with a decent re-balance of both front wheels) you would find a constant vibration through the steering wheel at a given speed usually above about 45mph. What you have complained of is vibration only upon braking plus a pulsation through the brake pedal whilst braking.
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