Question about 2003 Saab 9-3

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Replaced brake rotors, pads and front calipers along with master cylinder but the pedal still goes to the floor after bleeding them with no brakes

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  • Saab Master
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You bled them with no brakes? That didn't work. You have to get a pedal going or something is wrong. You must have a leak somewhere you don't know about. Why did you replace the master? Fill up the reservoir, again, start at the right rear, pump slow, hold it even if nothing is there, crack the bleeder, release the pedal and try it again, slowly, pump, hold , crack , anything yet?? One more time, pump, hold, crack, tighten, release. and pedal yet. Go back and check the fluid level, did it go anyplace, if yes, go do it some more, if not,You have got something wrong with the master, pump up the pedal again and crack one of the lines at the master, see what happens. Check it out, hope this helps.

Posted on Oct 16, 2010

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I Got a 2000 ford expedition i replace front brake pads, calipers brake pedal goes all the way to the floor I replace the booster and master cylinder and the problem don't go away


I would start by bleeding the air out of the brake system starting at the longest line first. Check for fluid in the master cylinder . IF you have problems bleeding then undo the lines at the master cylinder and using your fingers a valves bleed the air out and prime the master cylinder first then bleed the system

Feb 24, 2014 | Ford Expedition Cars & Trucks

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I am working on a 1993 f-350 with a 7.3 diesel the truck came to me with the brake pedal going to the floor... the customer had already put 3 new master cylenders on it along with a new brake booster......


I would ask where you got the master cylinders from. Were they new, or rebuilt? If the front brake pads look good and no apparent problems from the calipers, it can only be 2 problems. First, is there a leak somewhere in the system. If you have confirmed that there is none, then the master cylinder is 'bleeding' from front to back. Air wouldn't be a problem as you seem to have bled the brakes well, but the only sure way to know is using a bleeder. They run from a simple hand vacuum device to an air powered device which forces brake fluid thru the system.
Since your 'customer' replaced the booster, make sure the plunger rod is set correctly. Perhaps it is not set at the correct length, in which case you will never get a pedal. Diagnosis for this is a pressure tester to see if any pressure is being generated by the calipers.
Good luck. Hope this helps.

Sep 22, 2011 | 1993 Ford F350

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My 1997 chevy 1500 z71 brakes suddenly going all the way to the floor. Checked brake fluid and it was low. Could be wheel cylinder? Master cylinder? or ?


well, check the brake lines for leakage after adding brake fluid to the full mark. If the brake pedal goes all the way to the floor, it's likely there is a leak somewhere after the master cylinder. If the pedal gets hard after adding fluid, and pumping it several times with the car off, then the master cylinder is still ok.

If air has gotten into the master cylinder, it may have to be bled out on a bench, or using a scanner if that's the way your vehicle is.

Bleeding the Brake System (ABS) Auto Bleed Procedure NOTE: Perform a manual bleeding procedure. If the brake pedal height and firmness results are not achieved, perform the auto bleed procedure below.
NOTE: Perform this procedure when replacing the brake pressure modulator valve or electro-hydraulic control unit.
  1. Perform the manual brake bleeding procedure. Refer to Bleeding the Brake System (non-ABS).
  2. Check the master cylinder fluid level often to prevent running the system dry.
  3. Press the brake pedal firmly and run the Scan Tool Automated Bleed Procedure (for Gas engines) once, or the Function Test (for Diesel engines) four times. Make sure to release the brake pedal between each test.
  4. Perform the manual bleed procedure again. This should remove the remaining air from the brake system.
  5. Bleed the system as many times as needed to obtain the appropriate feel of the brake pedal.

Dec 18, 2010 | 1997 Chevrolet K1500

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

Brakes to the floor(almost) 99 blazer


bleed the brake again. if the pedal goes to the floor with little resistance, then the master cylinder is your problem.
the shim is to depress the noise when you applied the brake. you can skip that, if the brake works without it.

Apr 29, 2009 | 1999 Chevrolet Blazer

1 Answer

Brakes


All you have to do is take the calipers off crack open the bleeder of the side you are working on leave the old pad in the caliper and press the pad in as far as it will go tighten bleeder clean the rotors with brake clean to get the oily substance off they put on during shipping to keep them from rusting put rotor back in place and put new pads in caliper if they give you grease for the caliper sliders put some on the caliper bolts and sliders the thing the bolts go into on the caliper so they move fairly easy this way your brakes will work better and last longer put caliper back in place tighten caliper bolts snug usually with a ratchet like a good 3/8 ratchet then do the other side fill up the master cylinder with proper brake fluid usually dot3 but should say on master cylinder cap bleed brakes if you did just the front bleed the passenger side first pump pedal a few times dont go all the way to the floor have someone open the bleeder on the right front passenger front while holding pedal down with just a little pressure one foot on pedal one under pedal so it dont go to the floor then do the same for the other side check fluid start vehicle if pedal is good go for a test drive and thats it.

Jan 06, 2009 | 2005 Ford F-150

2 Answers

Brakes bad even after replacing pads/rotors


You need to replace the master cylinder. If all else is good and the petal goes to the floor, that's really about all it could be.

Nov 09, 2008 | 1989 Volvo 240

2 Answers

Just replaced the calipers and blead the brakes. Pedal still travels clear to the floor.


Did you bleed the wheel furthest away from the master cylinder? THen next furthest, to closest last. Did u make sure the master cylinder never got low enough to draw in air? To bleed, Pumo brakes 3x, holding pedal down 1/2 way, while bleeder is opened, let air/fluid flow, shut bleeder as flow diminishes so no air gets in the line. Is the car running when u bleed brakes? It should be. If u are doing all of this u should feel your pedal coming back (getting firm). Let me know how you make out. countrycurt0

Sep 21, 2008 | 1998 Mercury Mystique

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