Brakes going to the floor

Shaun7711 · May 27, 2023

I have a 2007 Toyota Tundra 4.7L. My brakes are going to the floor when first start up and I have to pump the pedal several times while driving to build enough pressure to stop. No leaks, reservoir full, pads are all good. I would appreciate any help possible.

Tundra234 · May 27, 2023

Shaun7711[OP] initial post: ↑

I have a 2007 Toyota Tundra 4.7L. My brakes are going to the floor when first start up and I have to pump the pedal several times while driving to build enough pressure to stop. No leaks, reservoir full, pads are all good. I would appreciate any help possible.
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Air in the system and a bad brake booster will cause that.

Bakershack · May 29, 2023

^^^Yep^^^

Welcome from LA (Lower Alabama)!

Jim LE 1301 · May 29, 2023

Welcome from NY.
Definitely air in the lines. You need to bleed them, if that doesn't work time to replace the booster.

Charvonia Design · May 30, 2023

Start with a good brake bleed.

shamrock246 · May 30, 2023

Tundra234 said: ↑

Air in the system and a bad brake booster will cause that.
Click to expand...

I’ve seen this before on other sites where the booster caused a soft pedal. Is something specific in these boosters that fails and causes this? In the past when a booster went bad I’ve just lost power assist (firm pedal)or vacuum leak. I’ve been chasing a soft pedal for a while.

Rgross2112 · May 31, 2023

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Brakes going to the floor

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Brakes going to the floor

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Bakershack Critical of Noncritical Thinkers

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