Question about Nissan Xterra

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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 is off, as soon as you start car, pedal goes to floor. Will stop car, but with extreme push to the floor???? No air seems to be in the lines???? Suggestions????

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  • Nissan Master
  • 1,455 Answers

Did you test the master cylinder? I'm assuming you replaced all those parts because you had low or very bad brakes to begin with. The brakes go soft when you start the car because the brake booster is gettting vacuum from the engine and "boosting" the braking effort. If the master cylinder does not hold pressure, you will not have good brakes, even with all those new parts. Have the master tested or bled.

Posted on Sep 28, 2010

  • Linda Egan
    Linda Egan Feb 02, 2013

    WE HAVE REPLACED MASTER CYLINDER TWICE. BLED STILL NO BRAKES.

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  • Nissan Master
  • 17,130 Answers

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.

Posted on Sep 28, 2010

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1 Answer

Overheating brakes


I think the problem is the brake pad or caliper, brake pad are too thick or the caliper are not good casted.
First try to confirm if you get a right brake caliper ,then confirm the brake disc ,brake pad, if they all ok, tear down the bracket of caliper, put into brake pad, then put into brake rotor.
http://www.fiverhope.com/category-4-b0-Brake-caliper.html

Jun 27, 2013 | Cars & Trucks

1 Answer

Brakes go to floor i changed master,4 calipers,4 brake hoses, and all pads


Time to redo the bleeding of the system again...starting with the master cylinder...you do not have to remove the master to re-bleed it. disconnect both brake lines from the master, and start again by pushing pedal to floor, and rebleed each line at the master...this is critical to work properly...you mentioned new master cylinder, if remanufactured I would return it. As noted above, after confirming the master is fully bled...rebleed each caliper beginning with the rear, farthest away from the master...you must have "air" in the brake lines. Hope this helps.

Apr 03, 2012 | 1998 Jeep Grand Cherokee

1 Answer

How to replace front brake pads


  1. Remove 2/3 of the brake fluid from the master cylinder.
  2. Raise and support the vehicle.
  3. Mark (index) the relationship of the wheel to the hub.
  4. Remove the tire and wheel assembly. Install 2 wheel nuts in order to retain the rotor.
  5. In order to push the piston into the caliper bore and provide clearance between the pads and the rotor, complete the following steps:
5.1. Install a large C-clamp (2) over the top of the caliper housing (1) and against the back of the outboard pad. 5.2. Slowly tighten the C-clamp (2) until the piston pushes into the caliper bore enough to slide the caliper (1) off the rotor. 81007416


  1. Remove the caliper bolts (2).
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  1. Remove the caliper (2) from the rotor and caliper bracket. Suspend the caliper from the strut using a wire hook (1).
81007418


  1. Remove the pads (2, 3) from the caliper bracket (5).
  2. Remove the 2 retainers (1) from the caliper bracket (5).
81007419


  1. Inspect the following parts for cuts, tears, or deterioration. Replace any damaged parts:
    • The bolt boots (1)
    • The piston boot (7)
  1. Inspect the caliper bolts for corrosion or damage. Use new parts, including bushings, when installing the caliper if any corrosion is found. Do not attempt to polish away corrosion.
INSTALLATION PROCEDURE

IMPORTANT: Before installing new brake pads, wipe the outside surface of the caliper boot clean. Use denatured alcohol.

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  1. Bottom the piston into the caliper bore. If installing new brake pads, use a C-clamp (2) in order to clamp the piston at the same time. Use a metal plate or wooden block across the face of the piston. Do not damage the piston or the caliper boot.
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IMPORTANT: Lift the inner-edge caliper boot next to the piston. Press out any trapped air. The boot must lay flat below the level of the piston face.


  1. Install the 2 retainers to the caliper bracket.
87649823

IMPORTANT: The wear sensor is on the inside pad. The sensor is positioned at the leading edge (upward) of the pad during forward wheel rotation.


  1. Install the pads (5) to the caliper bracket (3).
NOTICE: Use care to avoid damaging pin boot when rotating caliper.


  1. Install the caliper (2) to the bracket (3).
NOTICE: Refer to Fastener Notice in Service Precautions.


  1. Install the caliper bolts (1).
    • Tighten the caliper bolts to 31 Nm (23 ft. lbs.) .
  1. Remove the wheel nuts securing the rotor to the hub.
  2. Install the tire and wheel assemblies. Align the index marks on the wheel and the hub.
  3. Lower the vehicle.
  4. Fill the master cylinder to the proper level with clean brake fluid.
  5. Apply approximately 778 N (175 lbs.) of force to the brake pedal 3 times in order to seat the pads.
  6. Burnish the pads and the rotors.

Oct 19, 2010 | 1999 Oldsmobile Cutlass

1 Answer

How do you replace the front and rear brakes in a 2003 pontiac Grand Prix


Removal & Installation Front To Remove:
  1. Inspect the fluid level in the master cylinder reservoir. Remove fluid from the reservoir until the level is lower then half way between the MAX and MIN levels.
  2. Remove the tire and wheel assembly.
  3. Install 2 wheel nuts to secure the rotor on the hub.
  4. Remove the bottom brake caliper pin bolt.
  5. Pivot the brake caliper body upward and secure out of the way. Do NOT disconnect the hydraulic brake flexible hose from the caliper.
  6. Compress the piston back into the bore using a C-clamp. Figure of brake assembly with caliper raised showing brake pads in mounting bracket gmpc_l4.gif

  7. Remove the inboard and outboard brake pads from the brake caliper bracket.
To Install:
  1. Install the brake pad retainers and both brake pads into the caliper bracket.
  2. Pivot the brake caliper down over the brake pads and into the brake caliper bracket. Insert the lower brake caliper pin bolt and torque bolt to 70 ft-lb. (95 Nm).
  3. Reinstall the tire and wheel assembly.
  4. Lower the vehicle.
  5. Refill the master cylinder. Pump the brake pedal several times to seat the pads against the rotor.
  6. Check the master cylinder level and add fluid as necessary.
Rear To Remove:
Rear disc pads R&I gm-09-00-492.gif

  1. Inspect the fluid level in the master cylinder reservoir. Remove fluid from the reservoir until the level is lower then half way between the MAX and MIN levels.
  2. Remove the tire and wheel assembly.
  3. Install 2 wheel nuts to secure the rotor on the hub.
  4. Remove the upper caliper mounting bolt.
  5. Pivot the caliper down to access the pads.
  6. Remove the inboard and outboard pads from the caliper bracket.
  7. Remove the brake pad clips from the caliper bracket.
  8. Compress the piston back into the bore using a C-clamp and the old inner pad.
To Install:
  1. Install new brake clips in the caliper bracket.
  2. Install the inboard and outboard pads in the caliper bracket.
  3. Pivot the caliper up over the pads.
  4. Reinstall the upper mounting bolt and tighten to 32 ft. lbs. (44 Nm).
  5. Remove the 2 wheel nuts securing the rotor.
  6. Reinstall the tire and wheel assembly.
  7. Refill the master cylinder. Pump the brake pedal several times to seat the pads against the rotor.
  8. Check the master cylinder level and add fluid as necessary.
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Aug 26, 2010 | 2003 Pontiac Grand Prix

1 Answer

How to change front brake pads on 2003 Chevy Suburban


Disc Brake Pads for Suburban 1500 Removal & Installation Front To Remove:
Front caliper mounting bracket 93086g95.gif

  1. Remove the cover on the master cylinder and siphon out 2/3 of the fluid. This step prevents spilling fluid when the piston is pushed back into the caliper bore.
  2. Raise and support the vehicle safely.
  3. Remove the wheel and tire assembly.
  4. Compress the brake piston back into its bore using a C-clamp.
  5. Remove the 2 caliper mounting bolts. Lift the caliper off the rotor.
  6. Remove the inboard and outboard pad.
  7. Remove and discard the anti-rattle clips.
To Install:
Caliper bracket sleeves 93086g97.gif

  1. Thoroughly inspect, clean and lubricate all caliper slide points, bolts and hardware.
  2. Install new anti-rattle clips.
  3. Position the inboard and outboard pads into the support bracket
  4. With the 2 pads in position, place the caliper over the brake rotor and align the holes in the caliper with those of the mounting bracket.
  5. Install the caliper mounting bolts through the sleeves in the inboard caliper ears and into the mounting bracket.
  6. Tighten the mounting bolts to: 80 lb. ft, (110 Nm).
  7. Install the tire and wheel assembly. Lower the vehicle.
  8. Add fluid to the master cylinder reservoirs so they are 1/4 in. (6.35mm) from the top.
  9. Test the brake pedal by pumping it to obtain a hard pedal. Check the fluid level and add fluid as necessary.
Rear To Remove:
  1. Remove 2/3 of the brake fluid from the master cylinder.
  2. Raise and safely support the vehicle.
  3. Remove the wheel and tire assembly.
  4. Remove the brake caliper mounting bolts. Suspend the caliper from the frame with mechanic's wire. Do not allow the caliper to hang from the brake hose.
  5. Remove the brake pads from the caliper mounting bracket.
  6. Remove and discard the anti-rattle clips.
Rear brake caliper 93086g96.gif

To Install:
  1. Install new anti-rattle clips.
  2. Position the brake pads to the caliper mounting bracket.
  3. With the 2 pads in position, place the caliper over the brake rotor and align the holes in the caliper with those of the mounting bracket.
  4. Install NEW caliper mounting bolts. Tighten to: 30 lb. ft, (40 Nm).
  5. Install the wheel and tire assembly.
  6. Lower the vehicle.
  7. Refill the master cylinder to the proper level with fresh brake fluid. Pump the brake pedal slowly and firmly to seat the brake pads. Burnish the brakes as needed.
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Jul 05, 2010 | 2004 Chevrolet Suburban

1 Answer

Replaced front calipers,master cylinder,front and rear pads and resurfaced all four rotors.I bled the brakes starting with right rear then left rear, right front then left front and still feels like there...


did you bench bled master? if yes do you have abs system,if so you must bleed at abs block,if it has bleeders, if not then you must line bleed all 6 lines.2in from master 4 out to wheeles. then rebleed wheel in cylinder.If you have bleeders at abs block you dont to rebleed wheels. best dun with powerbleeder. hoooooops this helps

Jun 12, 2010 | 2000 Mercury Grand Marquis

1 Answer

How do I remove the front rotors from my 1999 honda accord


Removal & Installation

d4d9fd4.gif
After removing the caliper body, unfasten the retaining bolts and remove the caliper mounting bracket, in order to remove the rotor

  1. Use a siphon or clean turkey baster to remove about half of the brake fluid from the master cylinder.
  2. Raise and safely support the vehicle and remove the tire/wheel assembly.
  3. Remove the caliper mounting bolts, then lift the caliper assembly away from the brake rotor.
  4. Use a suitable piece of wire to suspend the caliper assembly. This will prevent the weight of the caliper from being supported by the brake flex hose which will damage the hose.
  5. Once the caliper body and brake pads are removed, unfasten the caliper bracket mounting bolts, then remove the bracket from the rotor.
  6. Remove the rotor retaining screws.
  7. Remove the brake rotor by pulling it straight off the wheel mounting studs or if seized in place, remove the stubborn brake rotor by threading in two 8 x 1.25mm bolts, two turns at a time until the brake rotor is released.
To install:
  1. If necessary, completely retract the piston into the caliper using a large C-clamp or other suitable tool as provided in the front disc brake pad replacement procedures in this section.
  2. Install the brake rotor onto the wheel hub and tighten the mounting screws.
  3. Install the caliper mounting bracket and secure with the retaining bolts.
  4. Install the caliper and pad assembly over the brake rotor and mounting bracket and install the mounting bolts.
  5. Fill the master cylinder to the proper level with fresh brake fluid.
  6. Install the tire/wheel assembly and lower the vehicle.
  7. Pump the brake pedal until the brake pads are seated and a firm pedal is achieved before attempting to move the vehicle.
CAUTION Do not move the vehicle until a firm pedal is obtained.

  1. Road test the vehicle to check for proper brake operation.

Nov 01, 2009 | 1999 Honda Accord

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

3 Answers

Bleed brakes but no pedal


Good! You bled the master cyl. before installation! The proper order of bleeding the lines, is to start with the wheel the greatest distance from the master cylinder. Then work your way to the next greatest distance, and last, the closest wheel. Make sure all air is removed from the lines before you proceed to the next wheel, and frequently check the master cyl. level, because, as I'm sure you know, if you **** in air at the master, you have to start all over again. I'm assuming you don't have a power bleeder, so with a helper do this with car running (make sure it's on safety stands and not going to fall on you!) Pump pedal 3 times, no need to mash the pedal into the floor, just 3 pumps 1/2 way down, hold 3rd pump at half way down level while bleeder is opened, when flow is about to stop at bleeder, close bleeder and repeat til no evidence of any air. Let me know how it goes and if you need any help.

Apr 21, 2009 | 2003 Pontiac Montana

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