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Re: Bad shimmy upon heavy braking Toyota 4Runner (why?)
>> Can you help me diagnose what is causing heavy shimmy upon braking?[color=blue][color=green]
>> Do you have any idea what test to run to determine the cause?[/color][/color]
[color=blue]
> You can narrow down which end, if a brake problem, by using
> emergency brake ...[/color]
Ah, Excellent idea. I didn't think it was the rear only because they have
drum brakes and I didn't think brake shudder could be caused by drum brakes
(how?).
But this is a good isolation test if it works.
Is this the test:
- Drive on the highway in a safe spot with no traffic
- Press on the brakes (brake shimmy will occur)
- Let up on the brakes (brake shimmy stops)
- Pull hard on the emergency brake
- If the brake shimmy occurs, the problem is in the rear
- If there is no shudder, the problem is in the front
Is that the way to isolate the front from the rear as the cause of the
brake shudder?
Stu
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