Question about 2001 Chevrolet Blazer

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4w disk normal driving brakes ok.

When stoped turning hard r or left at idle pedal dropes to floor.new rear calipers & supports new master cylinder vac & pressure bleed

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  • Chevrolet Master
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Check that when on turn the flexible pipes to the front calipers are not swelling out with the pressure where the flexible pipe is blocking up when twisting with the suspension/steering.Had same fault on a seat 124 many years ago

Posted on Jan 31, 2009

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Posted on Jan 02, 2017

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I have replaced 3 disc brake calipers on my 2001 pt cruiser. after bleeding all 4 brakes 3 times, I started the car and brake pedal goes to floor. is my brake booster shot?


Michael:

You must start bleeding the brakes at the wheel farthest from the master cylinder (usually the right rear), then the next farthest from the master cylinder, then the next, then the closest. If your master cylinder is at the left front of the car, start with the right rear, then the left rear, then the right front, then the left front. If you don't bleed the brakes in the correct order, you are just shifting the air in the lines from one line to another. Make sure that you close the bleeder before letting the brake pedal up, and the engine should not be running when you bleed the brakes... Make sure that the emergency brake is off. Make sure that the master cylinder does not run out of brake fluid at any time that you are bleeding the brakes.

Jan 24, 2016 | 2001 Chrysler PT Cruiser

1 Answer

Fiat 500 brake lights on permanently - loss of engine power


Does it pull to one side or the other when rolling? If so, then you may have a stuck caliper. If not, then you likely have a bad master cylinder and need to replace. If it is a stuck caliper, it would be wisest to replace BOTH calipers. If the brake pedal feels hard when you push, that would be another indicator the master cylinder is bad - but you may not have the hardness in the pedal. If pulling up on the pedal relieves the problem, I would suspect the master cylinder first. Driving on it could damage many components, and replacing them all may be expensive - I recommend verifying the master cylinder is bad and replacement before driving!!

Mar 28, 2014 | 2010 Fiat 500 1.2

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 brake pedal went to the floor, brought it in...They told me it was the Master Cylinder. They changed it and put in a brand new master cylinder but it still seems like the brake pedal goes further t


The extra brake travel can be;
1. air still in the brake lines and need bleeding
2. if there are brake drums on the rear they may be out of adjustment
3. if there are warped brake disc or caliper problems that will add to the brake travel

Dec 08, 2012 | 2002 Chevrolet Tracker

4 Answers

Brake pedal is mushy all the way to the floor. Have already replaced front calipers, master cylinder, and bled all the brakes. Pedal still goes all the way to the floor when stopping the car.


If the car has drum brakes in the rear, Jack the rear up and have someone push the brake pedal hard and you try to turn the wheel. If you can turn it you need to adjust the rear shoes. They may be traveling out so far that the fluid level drops causing the pedal to go to the floor. You must adjust them with the drum on till you hear and feel the shoes rubbing against the drum. Hope this helps.

Dec 30, 2010 | Honda Accord Cars & Trucks

1 Answer

1997 Jeep Grand Cherokee Brake Problem. Brake Pedal Falls To The Floor. Calipers were replaced twice,master cylinder,brake hoses and pads. Systemm has been bleed numerous times - no air but the brake...


This may sound dum but its been done a few times and is a simple mistake , the bleeder screw is up top, with the caliper on the bleeder screw should be up top, if not then calipers are on the wrong side, it sounds like air in the system, also you pumped the pedal up to push out the piston so pads hit rotor after bleeding,i dont see anything else, if the pedal is good with pinched lines at caliper then it got to be calipers are wrong or on the wrong side and the bleeder is not atop caliper,also you bleed the rear also? these trucks and cars use left caliper and rt rear on one system of the master and rt front and left rear on one side, let me know about the caliper, heres a picture to show you what i mean. hope this helpsjohnjohn2_23.jpg

Nov 16, 2010 | 1997 Jeep Grand Cherokee

2 Answers

Break pedal goes to floor with light pedal pressure used during stop and go situations (i.e. in town driving). Hit pedal hard and brakes grab at normal range.


renew the master cylinder immediatly ,the seal between the front and rear chambers has failed. This is a dangerous vehicle and shouldnt be used in this condition it WILL FAIL SOON

May 11, 2010 | 2004 Ford F150

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

2 Answers

Brakes feel spongy.when pressed hard goes nearly to floor.if pedal released slightly and pressed again feels normal.this is a 1997 toyota caldina GGT with abs.have bled brakes and sgimmed discs.any ideas?


Either you did not bleed the brakes properly or they need adjusted. (rear only) Front most likely are disks. If you put pads on the front and spread the caliper pistons, you should pump the brake pedal 10 or 15 times to move the pistons out. Some ABS systems are notoriously hard to bleed.

Apr 04, 2009 | 1997 Toyota Celica

1 Answer

Brake problem in pedal


you did'nt say why you changed the rf brake hose, but i'm assuming it was leaking, check to make sure the new one is not leaking and there is no other leaks in the system, this includes the other 3 calipers and hoses, the rear hose in between the rear hard line on the frame to the rear hard line on the rear axle. if there is still air in the right side line then the left side would be doing all the work and may cause your abs to kick in on the left side if it is attempting to lock up. this may be the noises you are hearing. if you still have power brakes after you shut the engine off, (you should be able to pump the pedal 3 or 4 times with the engine off before the pedal becomes hard) then the booster is ok. if it has a swooshing sound inside the car, (hard to describe that sound on a keyboard), then you may have a leak in the seal on the brake pedal side of the booster. brake master cylinder sounds like it is bypassing. if it still goes to the floor after you rebleed then replace the master cylinder. if a brake pedal goes all the way to the floor, it is possible to ruin the cylinder and cause it to bypass, this is caused by rust or corrosion, the seals on the plunger are compromised letting brake fluid leak past. any other questions please let me know. thanks

Sep 17, 2008 | 2000 Chevrolet Blazer

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