# Brake fluid pressure

**URL:** <https://community.cartalk.com/t/brake-fluid-pressure/38649>\
**Category:** Maintenance/Repairs\
**Tags:** bravada, fluids, oldsmobile\
**Created:** [October 26, 2009, 5:54pm UTC](https://community.cartalk.com/t/brake-fluid-pressure/38649 "2009-10-26T17:54:17Z")\
**Posts on this page:** 11\
**Page:** 1

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**Author:** ![jeff\_lowell](https://avatars.discourse-cdn.com/v4/letter/j/74df32/32.png) [@jeff\_lowell](https://community.cartalk.com/u/jeff_lowell)\
**Post date:** [October 26, 2009, 5:54pm UTC](https://community.cartalk.com/t/brake-fluid-pressure/38649/1 "2009-10-26T17:54:17Z")

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can anybody tell me what the brake pressure should be (while applying the brakes)for a 2000 olds.barvada?it has discs all the way around,and a.b.s.all around.thanks.

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**Author:** ![bennyandthejets](https://avatars.discourse-cdn.com/v4/letter/b/b487fb/32.png) [@bennyandthejets](https://community.cartalk.com/u/bennyandthejets)\
**Post date:** [October 26, 2009, 9:04pm UTC](https://community.cartalk.com/t/brake-fluid-pressure/38649/2 "2009-10-26T21:04:10Z")

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It that a rhetorical question? If you put my 90 pound mother in law behind the wheel and told her to stomp on the brakes, I’m pretty sure you would get a different reading than if I sat behind the wheel and stomped the brakes. I have never seen a brake pressure reading gauge for automotives. Maybe there is one,but I have never heard of it.

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**Author:** ![Xebadaih](https://avatars.discourse-cdn.com/v4/letter/x/d07c76/32.png) [@Xebadaih](https://community.cartalk.com/u/Xebadaih)\
**Post date:** [October 26, 2009, 9:21pm UTC](https://community.cartalk.com/t/brake-fluid-pressure/38649/3 "2009-10-26T21:21:42Z")

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There are many brake pressure testers on the market, but they aren’t usually a part of the weekend warriors tool collection, SSBC makes a set you can pick up for about $50.

As for the question, call your local GM dealer and have the service department look up the specs for you.

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**Author:** ![hd72mm](https://avatars.discourse-cdn.com/v4/letter/h/9fc29f/32.png) [@hd72mm](https://community.cartalk.com/u/hd72mm)\
**Post date:** [October 26, 2009, 9:34pm UTC](https://community.cartalk.com/t/brake-fluid-pressure/38649/4 "2009-10-26T21:34:22Z")

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Pump up the brakes 3 time, do not let pedal up.  
Open bleeder on one of the wheels and if it squirts 3-6 inches your pressure is good.  
Are you having trouble, why do you want to know?

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**Author:** ![jeff\_lowell](https://avatars.discourse-cdn.com/v4/letter/j/74df32/32.png) [@jeff\_lowell](https://community.cartalk.com/u/jeff_lowell)\
**Post date:** [October 26, 2009, 10:20pm UTC](https://community.cartalk.com/t/brake-fluid-pressure/38649/5 "2009-10-26T22:20:48Z")

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thanks,i didnt think of that

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**Author:** ![jeff\_lowell](https://avatars.discourse-cdn.com/v4/letter/j/74df32/32.png) [@jeff\_lowell](https://community.cartalk.com/u/jeff_lowell)\
**Post date:** [October 26, 2009, 10:25pm UTC](https://community.cartalk.com/t/brake-fluid-pressure/38649/6 "2009-10-26T22:25:03Z")

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i had a mechanic look at it,and he said(first)it was the brake booster,and after doing nothing,he said it was the master cylinder.i would just like to know which it is.

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**Author:** ![BustedKnuckles](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bustedknuckles/32/25_2.png) [@BustedKnuckles](https://community.cartalk.com/u/BustedKnuckles)\
**Post date:** [October 26, 2009, 10:42pm UTC](https://community.cartalk.com/t/brake-fluid-pressure/38649/7 "2009-10-26T22:42:18Z")

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If you have to pump the brakes to get a good pedal feel, it’s the master cylinder. If the pedal is hard to push, but doesn’t apply until considerable force is applied, it’s the booster.

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**Author:** ![hellokit](https://avatars.discourse-cdn.com/v4/letter/h/6a8cbe/32.png) [@hellokit](https://community.cartalk.com/u/hellokit)\
**Post date:** [October 26, 2009, 10:59pm UTC](https://community.cartalk.com/t/brake-fluid-pressure/38649/8 "2009-10-26T22:59:24Z")

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You still haven’t stated WHAT the brake problem is. Do you have a 5,000 psi pressure gauge to compare the pressures at each wheel with?

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**Author:** ![oldschool](https://avatars.discourse-cdn.com/v4/letter/o/e19adc/32.png) [@oldschool](https://community.cartalk.com/u/oldschool)\
**Post date:** [October 27, 2009, 12:02am UTC](https://community.cartalk.com/t/brake-fluid-pressure/38649/9 "2009-10-27T00:02:20Z")

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Most any brake problem can be resolved without knowing this spec.

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**Author:** ![jeff\_lowell](https://avatars.discourse-cdn.com/v4/letter/j/74df32/32.png) [@jeff\_lowell](https://community.cartalk.com/u/jeff_lowell)\
**Post date:** [October 27, 2009, 12:04am UTC](https://community.cartalk.com/t/brake-fluid-pressure/38649/10 "2009-10-27T00:04:02Z")

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thanks i think that will help

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**Author:** ![pleasedodgevan2](https://avatars.discourse-cdn.com/v4/letter/p/ad7895/32.png) [@pleasedodgevan2](https://community.cartalk.com/u/pleasedodgevan2)\
**Post date:** [October 27, 2009, 4:06am UTC](https://community.cartalk.com/t/brake-fluid-pressure/38649/11 "2009-10-27T04:06:30Z")

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A Haynes manual for your car will give you the procedures to check on the brake booster versus other problem. You don’t have to disassemble or even look at anything.
