Question about 1992 Oldsmobile Ninety Eight Regency

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No brake pressure

Ok so i replaced the calipers and pads and then filled filled the master cylinder up and then bled the brakes. but im getting no pressure to the peddle at all. i pumped the brakes for a good half hour and it built up alittle and then went away. hint is why im posting here its a 77 chevy 3/4 ton 4x4 power brakes now is my master cylinder bad or the brake booster

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  • Master
  • 2,004 Answers

The master brake has gone totally bad

Posted on May 21, 2009

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No brake pressure


When you bled the system was fluid coming out the bleeder valves?
Where the bleeder valves closed off with the brake pedal fully depressed?
Is the fluid reservoir cap ok?
Is the master cylinder ok?

Jan 05, 2014 | 1995 Chevrolet Cavalier

1 Answer

1988 crown victoria ltd new brakes seizing up


Where to start. . . .
A defective hose would only affect that wheel.
A faulty booster or master cylinder could cause the front wheels to lock and at varied amounts. You may have a metering block or just a junction block for the front lines. It would be mounted near the frame if you have one. Some Ford models from 88 - 92 used a master cylinder with the metering valve built in.
Its possible the front calipers got hot enough with the old pads to damage both front hoses.
I would want to know what it takes to release the pressure on the pads. Do you have to take the hoses loose, or just the bleeder screws on the calipers ? Or are the calipers not sliding back and forth ?

May 28, 2013 | Cars & Trucks

1 Answer

2001 Silverado 2500 HD Why Rear brakes don't work after I installed new hydro-boost power booster, master cylinder, calipers, and pads. I bled master cylinder before installing, and brakes beginn


Hello Patricia,

Have you checked the master brake cylinder reservoir for brake fluid loss?

I don't suspect the master cylinder as you have replaced it... but am more suspect of a leaking brake line or fitting which should have
been discovered when you had the system bled.

The only time I ever had a rear brake problem with a 2500 series Chevrolet was due to seized rear brake caliper guide pins...as your calipers are also new that is not your problem.

If your brake pedal feels spongy and travels to the floor board you have air in the system, a brake fluid leak or a failure in the power steering system, such as a broken hose, broken power steering pump drive belt, or failed pump, would result in a loss of pressure to both the hydro-boost and steering.

Find more information here:

. Hydro Boost Power Assist Systems Operation Diagnosis and Repair

Jul 23, 2017 | 2001 Chevrolet Silverado 2500HD

1 Answer

My kid bought a 99 Grand Am, the brakes were spongy and had to be pumped. The car now has new front calipers, pads, and new master cylinder. We bench bled the master cylinder and bled out the brakes. The...


If the car has Drum style rear brakes, make sure the adjustment is good. It takes a lot of fluid to activate them.
PS. I assume you did bleed the rears.

Apr 12, 2011 | Pontiac Grand Am Cars & Trucks

2 Answers

Just replaced rotors, calipers, caliper brackets, and pads. Bled all four wheels, starting with the farthest away from the master cylinder working my way to the closest. Brake pedal feels firm when car...


Bleed with the car running and make sure all the air is out. Now make sure there is no leak and the pad contact are adjusted without much gap so that the calipers hold on. make sure the servo assist is correct, if so and the master cylinder was set right , it must work. Please recheck all your work once again to trim up.

Sep 28, 2010 | Nissan Xterra Cars & Trucks

2 Answers

After replacing drive side caliper, both front disk brakes, and rear drum brakes, bleed all three lines, both my front calipers lock grinding my front brakes. I am going to re-bleed my lines tomorrow but...


I assume you mean that you replaced the front pads and rear shoes. Or did you also replace the disks and drums?? Either way you should be ok unless you also replaced the slave cylinders on the rears.
The fluid flows back up to the Master Cylinder as you squeeze the calipers and the slaves to fit the new parts in. Some people pre-fill the caliper to reduce the amount of air and make bleeding easier.Now .....Grinding better be a wrong choice of words. Possibly you spilled fluid on the pads while bleeding the lines. This will cause a binding and shuddering when you apply brake pressure. This will also make you think the lines are not bled properly because of the increased pedal pressure you are putting on the wet/lubricated front pads. If so, replace the pads. Don't try washing them with aerosol cleaner cause it takes more time and money than simply changing them.

Oct 04, 2009 | 2004 Saturn VUE

1 Answer

Pistons in both front calipers stay out, both calipers replaced


You may have a leak in the booster or master cylinder. You can put a pressure tester on the system to test for leaks. It does sound like you have an air leak.
You can try to bleed the master cylinder, then slave cylinder, then brake lines.

Aug 24, 2009 | 1993 Oldsmobile Achieva

1 Answer

I have no brake pressure. The rear calipers and master cylinder are new. There are no apparent leaks in the lines, and yet there is still no pressure in the brake system. The pedal just sinks to the floor....


the reson u get no pressure is that you need the special tool to bleed the ABS control hydraulic valve, u will need to have the dealer do this, air is trapped in the ABS control and until you bleed it correctly with the tool you will have no brake pressure.

Jul 15, 2009 | 1999 Toyota Camry Solara

1 Answer

I am replacing the rear pads and cannot get the caliper to compress using a c-clamp. Is there something special I need to do or know on my montego 05 car to get the caliper to compress? Sincerely Desperate...


One, take your brake fluid reservoir cap off.
Two, use a thin piece of wood to help you compress the piston on the caliper....do it slow. This way, you don't create a lot of pressure to the reservoir and it won't overflow.
Three, these are the steps to removing and replacing the pads for the rear. It does mention a special tool....but you can use a c-clamp for the same purpose:

Rear To Remove:
  1. Check the brake fluid level in the brake master cylinder reservoir.
  2. If required, remove the fluid until the brake master cylinder reservoir is half full. CAUTION
    Care must be taken when servicing rear brake components without disconnecting the parking brake cable from the brake caliper lever.
  3. Remove the disc brake caliper. Support the caliper with mechanic's wire. CAUTION
    When the brake pads are separated from the brake caliper, new brake pads must be installed. The brake pads are one-time use only.
  4. Remove and discard the brake pads and spring clips from the brake caliper anchor plate. NOTE: Do not remove the anchor plate guide pins. The guide pins are press fit to the brake caliper anchor plate. If the guide pins are damaged a new anchor plate must be installed.
  5. Inspect the brake caliper anchor plate assembly.
  6. Check the guide pins and boots for binding or damage.
  7. Install a new brake caliper anchor plate if it is worn or damaged.
To Install:
NOTE: The left caliper piston turns clockwise and the right caliper piston turns counterclockwise.
  1. Using the special tool, turn and compress the brake caliper piston into the cylinder.
  2. Clean the residual adhesive from the brake caliper fingers and pistons using the specified brake parts cleaner. CAUTION
    Do not allow grease, oil, brake fluid or other contaminants to contact the brake pad or caliper mating surface. Do not install contaminated pads.
    NOTE: Install all the new hardware supplied with brake pad kit.
  3. Install the new spring clips and brake pads.
  4. Position the brake caliper and install the 2 bolts. Tighten caliper bolts to 23 ft-lbs (31 Nm).
  5. If necessary, fill the brake master cylinder reservoir with clean brake fluid.
  6. With the engine running, apply pressure on the brake pedal to seat the brake pads.
  7. Test the brakes for normal operation.

May 17, 2009 | 2005 Mercury Montego

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