Question about 1989 Jeep Wrangler

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Brake booster brakes hard - 1989 Jeep Wrangler

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Any vacumn at booster, should be 17 inches of vacumn

Posted on Oct 16, 2010

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Posted on Jan 02, 2017

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2007 dodge durangos brake light came on then the brake pedal got really hard to press so i replaced the whole braking system and it was good for 2 days now the brake is hard esp bas brake lights on


If your truck has a brake booster, I suspect the vacuum hose to the booster has gotten fuel into it or just gotten old and is collapsing inside.

Apr 27, 2015 | 2007 Dodge Durango

1 Answer

How to tell is the brake booster is bad in a 1986 dodge D100


This is a standard Vacuum operated brake booster.. If you are having fluid leaking at the rod that attaches the brake pedal to the booster it is a bad Master Cylinder. The Brake fluid will eventually destroy the diaphram in the booster if it hasn't already. . Replace or rebuild the Master Cylinder and wash the brake fluid out of the booster. When the booster goes bad the brake pedal will become very hard to push.. because you will have lost "boost" This is not really a hard job. If fluid id leaking somewhere else.it should be very easy to spot.. Brake fluid looks like oil leaking..

May 13, 2014 | 2005 Cadillac STS

1 Answer

Why is it so hard to apply brake pedal?


_______power brake booster, check vacuum to booster and the check valve for brake booster. primary symtom is high hard pedal that requires greater then normal pedal pressure to stop car. testing booster= pump brakes several times with engine off to deplete stored vacuum. turn on engine with pushing slightly on brake pedal. you should be able to feel the pedal fade away a bit, and then become firm. But not hard. if you feel nothing at the pedal when engine starts. Brake booster is not working. Good-day! make sure vacuum is going to booster with engine running. it may just be a bad vacuum line or check valve.

Apr 30, 2014 | 1984 Buick Skyhawk

2 Answers

Power brakes stopped working


Brake booster vacuum hose , inspect that, if the hose is good then brake booster has went bad.e1320de5-8a99-48ed-84e9-c42d2e2274cb.jpg

Dec 10, 2013 | 1997 Ford Taurus

2 Answers

I change the brake booster and the brake still go all the way to the floor


How did you bleed your brakes or did you even do that? their should be a little nipple on your calipers or even the brake booster to bleed the system.

Oct 19, 2013 | Cars & Trucks

1 Answer

Clogged line


When your brake pedal is hard, you may need to check your brake booster and the vacuum line to the brake booster if their is sanction, if their is sanction in vacuum pipe to the brake booster you need to have your brake booster replaced.
You also need to check your vacuum pump and the piping.

Oct 18, 2013 | Nissan Cars & Trucks

1 Answer

I was told that my brake booster is going out, but reading some of the other problems I want to make sure it's not a vacuum leak. My car acts lik it wants to cut off and has actually cut off twice when...


when you feel very hard to push the brake pedal, then must be problem of brake boosters. you can try to change a new one brake booster ,we supply all kinds of brake boosters ( vacuum brake boosters), toyota brake booster, Nissan brake booster, chevrolet brake booster etc, feel free to ask any questions. www.fiverhope.com

Aug 02, 2013 | Cars & Trucks

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Brake booster appears not to be working properly. brakes work ok for 1 or 2 apps then pedal gets hard. cannot hear any vacume leaks. the car does have a vacume switch in the booster


the booster is the problem, or a hole or leak in vacuum line to booster check the check valve also ! from manifold. heres the symtoms of a bad brake booster. primary symtom is a hard pedal on application, to test booster. pump brakes several times with engine off. to deplete stored vacuum. turn on engine with pushing slightly on brake pedal. you should feel the pedal fade away abit and then become firm. but not hard. if you feel nothing at pedal when engine starts, brake booster is not working! check the vacuum lines first!!

Jun 11, 2011 | 1985 Pontiac 6000

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My 2004 prius abs and brake light came on and the the brakes became very hard and constant beeeep noise, so i would shut the car off and pump the breaks and it would work fine so i decided to bleed the...


well, a hard firm pedal, usually indicates a bad brake booster or a vacuum leak to booster or the vacuum check valve, on booster. TO TEST BRAKE BOOSTER; pump brakes several times with engine off to deplete stored vacuum. turn on engine with pushing slightly on pedal. you should feel the pedal fade away a bit and then become firm, but not hard. if you feel nothing at the pedal when engine starts the booster is at fault. good-luck !!

Feb 03, 2011 | 2003 Toyota Prius

2 Answers

Looking for a replacement anti-lock brakes on 1990 markvii lincoln


do you have a brake booster or you have the hydrolic one

Jun 28, 2008 | 1990 Lincoln Mark VII

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