Question about Volkswagen Golf

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How to tell if the Brake Master Cyclinder is bad on 1991 VW Golf. About 4 months ago new front and rear brakes installed by repair shop. Front got both, new calipers, both new pads, both new rotors. Front brakes are metal to metal, rear brakes are fine.

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  • Anonymous Oct 16, 2008

    i have the same problem i replaced my whole front brake sys bled it 6 times and still no luck. sould my master cyclinder be bad?

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  • Master
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You can tell if the break master cyclinder is bad, if you don't have any break action or peddle to the floor, break is sticking, or any other break related symtom, not normal to your daily driving.

Posted on Oct 15, 2008

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1991 PATHFINDER Does this car have a proportional valve and would this cause front calipers to lock up?


Need year make and model. In most newer vehicles the valve is located in the master cylinder. It will not normally lock up the front wheels. It usually controls one front and one rear wheel at a time in the event of a brake fluid loss. If front calipers are locking up you could have seized caliper pistons/slide assemblies. The flex hoses may be deterioated internally due to contaminated brake fluid or the master cylinder may be defective

Jul 09, 2015 | Cars & Trucks

1 Answer

Golf not braking on rear brakes also no pedal


You say you filled it with fluid after the repairs. You must also "bleed" the brake lines to purge any air that is trapped in them. Brake fluid provides the hydraulic compression that causes the brake pads to clamp to the brake rotor/drum. Air in the lines will prevent this as when the brake pedal is pressed, the fluid will simply pressurize the air in the lines and not activate the caliper/wheel cylinder. The reason you have front brakes is that modern vehicles have dual-reservoir master cylinders to prevent total brake loss in the event of a leak. This is why you still have front brakes as there is no air in those lines. You will need to bleed the rear brake lines at BOTH rear wheels to purge air rom the system. The procedure is fairly simple, though some cars with ABS have to have things done differently. I would recommend you check an online forum for you vehicle (simply Google "bleed rear brakes 20xx VW Golf) and see what comes up. It is easier to do with two people, but one can sometimes pull it off.

Jan 01, 2012 | Volkswagen F 224 Cars & Trucks

1 Answer

Why do brakes go to floor but still have light pressure?


It sounds like you have air in your brake lines. This is usually caused by a very low brake fluid in the master cyclinder.
To fix this problem fill up the master cyclinder with brake fluid and bleed the front wheel brake cyclinders until the air bubbles are removed. Keep the master cyclinder topped up with brake fluid. Then bleed the rear wheel brake cyclinders until the air bubbles are removed. Don't forget to top up the brake fluid in the master cyclinder.

Dec 31, 2011 | 2004 Chevrolet Cavalier

1 Answer

My brakes had began to fail. I tried adding brake fluid, they got worse. So I took it in for repair to a local shop, they said I needed a new master cylinder and added one. I had been driving my car for...


1- New master cylinders could also fail, possibly due to bad quality replacement parts or maybe even just a factory fault on a good quality master cylinder.

2- If you had blown a rear wheel cylinder, you most deffinatly should still have had a form of front brakes. the reason for this is as follows... For this very saftey meassure manufactures design the container for the brake fluid supplying the master cylinder in two internally, so this would mean that if you where to drain all the brake fluid through the rear wheel cylinders an acceptable amount of brake fluid should still remain within the one compartment of the reservoir for the front brakes to still opperate.

3- Leaking rear wheel cylinders should have been noticed by the technician who installed the master cylinder, the reason for this is because the brake fluid would have had to be bled through the system at each wheel. even though it would have been performed from the back of the wheel one would expect the technician to notice the brake fluid dripping out behind the brake drum.

I hope the above is of assistance to you.

Regards.

Feb 21, 2011 | 2001 Ford Taurus

1 Answer

I have a 91 s10 2wd 5spd with a 2.5 4cyl... i bought the truck with the brakes not working, it had a bad rear brakeline that was cracked right in front of the rear driver tire. and since this truck is...


the master cyclinder is divided into diagonal wheels. meaning that each line from the master cyclinder provides fluid to a front wheel and rear wheel. on the front resevoir of the master cyclinder it would be perhaps the left front and right rear brake for example. you need to block the lines going to the rear wheels independently and then bleed the brakes again starting with the wheel furthest from the master cyclinder.

Dec 08, 2010 | 1991 Chevrolet S-10

1 Answer

Front brakes only stick when engine is warm


either the servo push rod is over adjusted ,or teh rear seal in the servo is leting air in without the brake being applied

Apr 30, 2010 | 1991 Volkswagen Golf

1 Answer

Can't get front brakes to work


fill master cylinder, slowly close of brake lines to be sure you have pressure from master cylinder, pump brakes to check master, check that calipers were seated in housing properly

Aug 08, 2009 | 1997 Volkswagen Golf

1 Answer

Hooking up the brake lines to the master cyclinder


well that is easy the front line goes in the front and the raer to the rear

Mar 27, 2009 | 1993 Chevrolet Lumina

1 Answer

No brake fluid going to drives side back brake


1. You could have air in the lines yet, but more specifically, I would need to know if you have anti-skid system in your car. Also, you may have a proporation valve in the system that has to be activitated before the system can be bled.

In bleeding, you start at the rear wheels first and then work to the front, doing the master cyclinder last.
Finally, the brake master cyclinder is designed so that the front part of the cylinder pumps fluid to only one front wheel and only one rear wheel. The rear part of the master cylinder only pumps fluid to the other 1 front and 1 rear. This is so that if you loose your brakes, you will always have a rear and front working.
Bill

Oct 11, 2008 | 1992 Buick LeSabre

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