Question about 1996 Jeep Grand Cherokee

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Brakes go down to the floor when vehicle is started

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You have a leak somewhere in the brake system. Make sure the master cylinder is full (if it is, likely it is internally bypassing) If not, re-fill it and pump the brakes and check all lines and wheels for fluid seepage. Don't drive it 'till you have found the problem and repair it.

Posted on Oct 02, 2009


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Brakes not working when depressing pedal. Pedal has some resistance, and goes down about half way to floor, and no further. Will not stop vehicle.

you have air in the system , a leak and possibly worn brakes. You need to takr immediate action as to drive a vehicle in this condition is hazardous to yourself and other road users
Also, maybe the servo is involved

Jul 18, 2015 | 2003 Nissan Xterra

1 Answer

How do I repair brakes?

When you start the engine, the brake booster comes into play. Brakes to the floor indicate air is in the system, or master cylinder is bad.

Jul 06, 2015 | 2006 Nissan Navara 2.5

2 Answers

I have been working on power brakes and bleed system and got a good pedal pressure

try bleeding the brakes with the engine running there may still be some air in the system. make sure the master cylinder doesn`t run out of brake fluid.

Sep 03, 2014 | 1979 Chevrolet Camaro

1 Answer

F350 brake pedal goes to floor, whinning sound

they use the power steering pump to power the brake booster so check the level of the power steering

Oct 14, 2012 | Cars & Trucks

1 Answer

I was driving down the road and the brakes were fine and the next light they went to the floor and the started grinding i got it home and bled the brakes i got pressure with the key off and when you start...

without sticking my ugly head under the wheel ?? its difficult to give you an instant answer ,but from what you describe it sounds like the disks are worn and the pads have worn right down causing onje of the pads to drop out.So you have a piston popped out which is why when you start the engine the servo is pushing the fluid out but on normal pumping its holding.Renew brake disks and new pads ,also a seal kit for the pistons because if iam correct then you have damaged the seal as well.Also while your doing it because of the age of the vehicle?1994? then i would also renew the front flexible brake hoses ,because then crack/perish and collapse inside the pipes which causes the brakes to hold on.

Oct 23, 2009 | 1994 Ford Explorer Limited

1 Answer

My brakes quit working

its most likley your brake booster lost vacuum seal and if brakes work when vehicle isnt running it may be your proportioning valve

May 12, 2009 | 1987 Toyota Camry

1 Answer

Brake pedal goes down to floor. Putting brake fluid doesn't solve problem. Vehicle must coast to a complete stop.

First look for obvious leaks under the vehicle, especially the inside area of each wheel... If you see fluid, you have either a blown cylinder seal or a bad line (check the rubber hoses to the front and back brakes too) Repair the offending part and bleed the air out of the system... (remember to clean pads or shoes if they have fluid on them)... If you see no hint of leakage anywhere, then suspect the master cylinder... if you remove the master cylinder, check and make sure that it didn't leak fluid into the brake booster diaphragm (Brake fluid will destroy the booster)... as in any repair when you open the system (lose fluid), you will need to bleed out the air to restore function... hope this helps...;-)

May 04, 2009 | Ford Aerostar Cars & Trucks

1 Answer

Brake problems

Thank you for allowing me to assist you, Before we do anyhing, I need some additional information.
Please respond to the following 5 questions so that I may be able to help you better.
Is you vehicle front disc/rear drum or front disc/rear disc?
When were the brakes changed last?
If so, front or rear?
If you apply the park brake, does the vehicle move at all when you put it in gear?
Finally, I am understanding that the brake pedal goes to the floor, you have no resistance on the pedal, and the vehicle does not stop when applying the brakes. Da?

Oct 08, 2008 | 1991 Toyota Previa

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