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Anonymous Posted on Dec 11, 2017

99 dakota with engine running brake pedal will travel to the floor with engine turned off pedal is hard 1 inch from top

99 Dakota has all new brake lines, new wheel cylinders and shoes, new rotors, pads and caliphers, air was completely bled out od system, no warning lights yet with engine off pedal only travel 1 inch and is very hard, start the engine and with steady pressure on brake pedal, brake pedal will travel to the floor.Why?

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Daniel McAmoil

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  • Posted on Dec 11, 2017
Daniel McAmoil
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Sounds like a bad brake booster.. It's the large can behind the master cylinder. The fact you have a hard pedal with engine off is the key here.

5 Related Answers

Anonymous

  • 512 Answers
  • Posted on Dec 21, 2008

SOURCE: dash warning light

on the 93 there is a problem with the abs system. there are several things that could be wrong. if i remember correctly the module is behind the passenger side kick panel. you will find a single wire coming off the module. if you ground it then turn on the key it will flash the brake lights in the dash. count the flashes this is the code for the error. it will help in the repair. as for the second truck you have a leak that needs repaired.

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Anonymous

  • 141 Answers
  • Posted on Jan 21, 2009

SOURCE: 99 dakota back brakes

Ask your mechanic to back off on the adjustment ( way too tight ). Or maybe, did you accidently leave the parking brake on? ( happens to the best of us!!! ). Good luck and God bless.

headstrong56

headstrong56

  • 493 Answers
  • Posted on Jul 17, 2012

SOURCE: 2005 dodge neon no brake pressure

it's a long shot but look under your dash and see if the spring to the brake pedal has come off

Anonymous

  • 336 Answers
  • Posted on Aug 01, 2012

SOURCE: i have a 1999 dodge durango replaced brake caliper an rotors an pads problem is when i bled the system the brake pedal is sponge

If you have drum brakes on the rear the brakes probably need adjusted. murf427

Testimonial: "thanks i will try it"

perkins48

Thomas Perkins

  • 15088 Answers
  • Posted on Oct 27, 2012

SOURCE: 98 dodge ram 4x4 brakes go to floor after starting truck

CAUTIONBleeding of four-wheel antilock brake systems require the use a dedicated scan tool.http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?pageId=0900c152800c0dbe

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1975 Ford F350 360 Engine the brake pedal stop 2 Inches from the floor is that good pedal?

Your better off going by the feel of the pedal rather than measurements. Try this. With the engine off and the brake system cold remove the key from the ignition and pump the brake pedal. it should get progressively harder and your foot travels a shorter and shorter distance until its too hard to press.
Press and hold the brake pedal hard down then start the engine. You should feel the pedal soften, that's the vacuum inside the brake booster kicking in.
Release the pedal and again press it hard down, holding it there. The pedal should feel firm and not change. Release and repeat to make sure.
If the pedal has no resistance check your work as there is no pressure in the system. If the pedal is soft or spongey re-bleed the system starting with the calliper furthest away from the reservoir.
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2002 Dodge Dakota club, 3.9 auto. Brake pedal is soft, brakes but no resistance, pedal almost to floor. Changed booster and master cylinder, same issue

You have air trapped in the braking system somewhere. Have you bled the system thoroughly at all four wheels?
Have you changed the front calipers recently. Many years ago, I helped a friend mount new calipers on his vehicle, and we put the new calipers on the wrong side -- right one on the left side and vice versa. In this configuration, the bleeder screw wound up on the lower portion of the caliper instead of at the top, where it needs to be to allow trapped air to come out. Just a thought.
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1992 Dakota all new brakes master cylinder, wheel cylinder everything replaced but braking system is still spongy and pedal goes almost to the floor any other ideas

I am wondering if you have to bleed the air out of your braking system. after repairs they should be bled to take the air out.
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I cant get the air to bleed out of my brakes on a 1997 dodge dakota i put on a new master cylender and have been bleeding them for 2 days they seem to bleed normal when truck is not running pump up and...

You need a helper, to slowly press the brake pedal down, as you open bleeder valve,then close before your helper gets near the floor.
Repeat until all air is out of each wheel position.
RR,LR,RF then LF. Always start from the farthest wheel and have motor running
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2003 dodge dakota

check 2 things first one is their is a plastic check valve that is inserted into the booster (under your hood) then goes to a vaccum line ,then to the engine, pull it out of the booster and check the valve it should be L - shaped. it might have a hole in it causing a vaccum leak. be carefull pulling it out not to break it just pull straight out. if that is ok put it back in. then your problem is going to be the brake booster the big black round case. sometimes the diaphram inside the booster rips causing a vaccum leak which causes a hard brake pedal and you have to stand on the pedal to stop. then you will have to repace the whole thing but not the master cylnder unbolt master cylder with the brake lines connected, the lines will give then disconnect brake pedal arm under dash inside of trk their should be 2 nuts or 4 buts under dash on inside of firewall near brake pedal then remove booster pulls out from under hood. there is not much to replacing them.
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