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2014 Lexus GX460 Braking Causing Shake


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chothomas
New User

Mar 31, 2021, 8:15 AM

Post #1 of 2 (606 views)
2014 Lexus GX460 Braking Causing Shake Sign In

During a recent road trip, I noticed my GX460 shaking for about 3-4 seconds after stepping on a brake downhill. It does stop shaking after 3-4 seconds. It has 93K mileage. Anyone know what the issue maybe?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 31, 2021, 8:18 AM

Post #2 of 2 (602 views)
Re: 2014 Lexus GX460 Braking Causing Shake Sign In

You could have a leaking vacuum booster causing a severe vacuum drop when applying the brake.

You could also have an unstable idle speed that is momentarily dropping before the electronic throttle recovers. Cleaning the throttle body may help that.



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