Question about 2004 Dodge Ram 2500

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No pedal i replaced master cylinder ,both front calipers and brake lines no matter how many times i bleed the brakes i still have no pedal what is the problem

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  • Master
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You either have air in the system or a faulty master cylinder.

Check fluid is being delivered from the master cyl. by slackening off each of the brake line connections in turn (at the master cylinder) while depressing pedal.
Until fluid is able to be delivered from the master cyl. itself you have no hope of bleeding the rest of the system.
As with all brake bleeding processes, only release the fluid lines when the pedal is being pushed slowly down - re-tighten it on the upward stroke of the brake pedal to stop it drawing air back into the system.

When you have achieved fluid delivery from the master cyl. move to each wheel in turn, starting at one of front wheels, then to the other front whl, then to the rear.

Again only open the bleeder valve when the pedal is being pushed slowly down.
(If you keep the master cylinder full of brake fluid, sometimes gravity will cause the brake line to 'self bleed' if the bleed nipple is left slightly open for several minutes at the start of the bleed process).
When fluid appears, then move to the next wheel and repeat the process until the pedal hardens up.

If you have the time to spare, I have often found that provided the master cylinder is kept full, leaving the system overnight will allow a lot of the air to leave the system (gravity helps).
Patience is required.



Posted on Jun 04, 2009

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  • Expert
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Hello;
Did you bleed the master prior to installation? If not you may have a bunch of air trapped in the system. Start at the master and use a pressure bleeder too get the air out. If you have anti-lock you may have to have the dealer purge the system.
Thanks;
Rich
RPM Northwest

Posted on Jun 04, 2009

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1 Answer

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

I have replaced the master cylinder on my 2006 chrysler town and country about every week we keep losing brake pedal so we have bleed them and get pedal back. the only place i find air is the front driver...


Could be a couple of problems, bad master cylinder (not bench bled properly or bad seal out of the box, I have had a few like that), proportioning valve seal, brake line not tight/sealed properly sucking air into system,bad caliper. First of all, are you losing brake fluid along with your pedal? Need to know that first. If you are, try to find where you losing it from, you will find your problem. There can be absolutly NO leaks in a brake/hydraulic system. If not, check that all lines are tightly seated and nuts are quite tight using a line wrench to get proper torque. If so, you can replace the master cylinder again (take old one back to store for new one under warranty) and be sure to thoroughly bench bleed. When bench bleeding, take your time, do not push plunger in too quickly, use a SLOW steady push until ALL bubbles, no matter how small have been eliminated. Tapping on the bottom of the cylinder while bleeding will help remove trapped air. Even a very small amount of air will take forever to bleed out at the calipers. If cylinder/all calipers/lines appear to be right, I would suspect the proportioning valve is faulty. To find it, follow brake lines from master cylinder to where they go into the valve. Replace. Hope that helps.

May 30, 2011 | 2006 Chrysler Town & Country

1 Answer

I replaced the whole back break line,as i try to bleed them i get fluid out of the front passenger side and the back driver side,but nothing out of the other two.whats the problem?


Hi, your proportioning valve is stuck. Take the caps off and recenter the one stuck valve. Then rebleed the system using the procedure below. Thanks for using fixya.

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For those of us who are not fortunate enough to have access to a power bleeding tool, the manual brake bleeding procedure will quite adequately remove air from the hydraulic system. The major difference between the pressure and manual bleeding procedures is that the manual method takes more time and will require help from an assistant. One person must depress the brake pedal, while another opens and closes the bleeder screws.
  1. Deplete the vacuum reserve by applying the brakes several times with the ignition OFF .
  2. Clean the top of the master cylinder, remove the cover and fill the reservoirs with clean fluid.
  3. The master cylinder must be bled first if it is suspected to contain air. If the master cylinder was removed and bench bled before installation it must still be bled, but it should take less time and effort. Bleed the master cylinder as follows:
    1. Position a container under the master cylinder to catch the brake fluid.
    2. Loosen the front brake line(s) at the master cylinder and allow the fluid to flow from the front port.




WARNING Do not allow brake fluid to spill on or come in contact with the vehicle's finish as it will remove the paint. In case of a spill, immediately flush the area with water.

  1. Tighten the line connection(s).
  2. Have an assistant depress and hold the brake pedal.
  3. Loosen the line connection(s) again, allowing air to escape from the master cylinder.
  4. Tighten the line(s), then have the assistant release the brake pedal and wait for 15 seconds.
  5. Repeat steps D through F until the line(s) are free of air.
  6. When finished bleeding the air from the master cylinder, tighten the line connections to 20 ft. lbs. (27 Nm).
  7. Repeat steps B through H, only with the master cylinder rear pipe fitting(s).

  1. Refill the master cylinder with fresh brake fluid.



WARNING Never reuse brake fluid that has been bled from the system.

  1. If a single line or fitting was the only hydraulic line disconnected, then only the caliper(s) or wheel cylinder(s) affected by that line must be bled. If the master cylinder required bleeding, then all calipers and wheel cylinders must be bled in the proper sequence:
    1. Right rear
    2. Left rear
    3. Right front
    4. Left front

  2. Bleed the individual calipers or wheel cylinders as follows:
    1. Place a suitable wrench over the bleeder screw and attach a clear plastic hose over the screw end. Be sure the hose is seated snugly on the screw or you may be squirted with brake fluid.
    2. Submerge the other end of the tube in a transparent container of clean brake fluid.
    3. With the help of an assistant, apply the brake pedal slowly and hold.


During the bleeding procedure, make sure your assistant does NOT release the brake pedal while a fitting is loosened or while a bleeder screw is opening. Air will be drawn back into the system.
  1. While the assistant continues to apply pressure to the brake pedal, loosen the bleeder screw, and watch for air bubbles in the container.

Be very careful when loosening the wheel cylinder and brake caliper bleeding screws. The bleeder screws often rust in position and may easily break off if forced. To help prevent the possibility of breaking a bleeder screw, spray it with some penetrating oil before attempting to loosen it. Installing a new bleeder screw will often require removal of the component and may include overhaul or replacement of the wheel cylinder/caliper.
  1. Tighten the bleeder screw.
  2. Instruct the assistant to release the brake pedal.
  3. Wait approximately 15 seconds, and instruct the assistant to depress the brake pedal again.

Remember, if the reservoir is allowed to empty of fluid during the procedure, air will be drawn into the system and the bleeding procedure must be restarted at the master cylinder assembly.
  1. Repeat steps C through F until there are no air bubbles present in the container.

  1. Check the pedal for a hard feeling with the engine not running. If the pedal is soft, repeat the bleeding procedure until a firm pedal is obtained.
  2. If the brake warning light is on, depress the brake pedal firmly. If there is no air in the system, the light will go out.
  3. Once all the air is bled from the system, install the bleeder screw caps.
  4. After bleeding, make sure that a firm pedal is achieved before attempting to move the vehicle.

Feb 14, 2011 | 1994 Pontiac Grand Am

1 Answer

Have an 89 festiva changed 5 master cylinders and still cant bleed front driver and rear pass wheel and also changed distribution block 3 times. i cant bleed it rite from the front port of the master...


Section 06-06: Hydraulic Brake System 1992 Festiva Workshop Manual GENERAL SERVICE OPERATIONS Manual Bleeding
  1. Read Hydraulic System Bleeding General Information.
  1. Clean all dirt from the master cylinder filler cap.
  1. Fill the master cylinder with the specified brake fluid. During the bleeding operation do not allow the master cylinder to run dry.
  1. If the master cylinder is known or suspected to contain air it must be bled before the wheel cylinders or calipers. To bleed the master cylinder, loosen the front line fitting and have an assistant push the brake pedal slowly through its full travel. While the assistant holds the pedal, tighten the brake line fitting. After the line fitting is tightened, the assistant may release the brake pedal. Repeat this procedure on the rear brake line. Repeat the entire process several times to ensure all air has been removed from the master cylinder.
  1. Remove the bleeder screw cap from the appropriate rear wheel cylinder.
  1. Position a box end wrench on the bleeder fitting.
  1. Attach a rubber hose to the bleeder fitting. The hose has to fit snugly around the bleeder fitting.
  1. Submerge the free end of the hose in a container partially filled with brake fluid.
  1. Loosen the bleeder fitting approximately three quarters of a turn.
  1. Have an assistant push the brake pedal slowly through its full travel and hold it there.
  1. Close the bleeder fitting.
  1. Have the assistant release the brake pedal.
  1. Repeat Steps 9 through 12 until air bubbles cease to appear at the submerged end of the bleeder hose.
  1. When the fluid entering the bottle is completely free of bubbles, tighten the bleeder screw, remove the bleeder hose, and install the bleeder screw cap.
  1. Repeat Steps 5 through 14 at the appropriate diagonal front caliper.
  1. Check the master cylinder fluid level. If necessary fill it to the correct level with the specified brake fluid.
  1. Check pedal feel. If the pedal remains spongy, repeat the bleeding process or, if necessary, refer to Diagnosis and Testing in Section 06-00.

Jan 04, 2011 | 1991 Ford Festiva

1 Answer

How to bleed brakes on 1997 Saturn


The brake system bleeding procedure differs for ABS and non-ABS vehicles. The following procedure pertains only to non-ABS vehicles. For details on bleeding ABS equipped vehicles, refer to the ABS procedures later in this section.

WARNING Make sure the master cylinder contains clean DOT 3 brake fluid at all times during the procedure.
  1. The master cylinder must be bled first if it is suspected of containing air. Bleed the master cylinder as follows:
    1. Position a container under the master cylinder to catch the brake fluid.
    2. Loosen the left front brake line (front upper port) at the master cylinder and allow the fluid to flow from the front port.
    3. Connect the line and tighten to 24 ft. lbs. (32 Nm).
    4. Have an assistant depress the brake pedal slowly one time and hold it down, while you loosen the front line to expel air from the master cylinder. Tighten the line, then release the brake pedal. Repeat until all air is removed from the master cylinder.
    5. Tighten the brake line to 24 ft. lbs. (32 Nm) when finished.
    6. Repeat these steps for the right front brake line (rear upper port) at the master cylinder.
WARNING Do not allow brake fluid to spill on or come in contact with the vehicle' finish, as it will remove the paint. In case of a spill, immediately flush the area with water.
  1. If a single line or fitting was the only hydraulic line disconnected, then only the caliper(s) or wheel cylinder(s) affected by that line must be bled. If the master cylinder required bleeding, then all calipers and wheel cylinders must be bled in the proper sequence:
    1. Right rear
    2. Left front
    3. Left rear
    4. Right front
  2. Bleed the individual calipers or wheel cylinders as follows:
    1. Place a suitable wrench over the bleeder screw and attach a clear plastic hose over the screw end.
    2. Submerge the other end in a transparent container of brake fluid.
    3. Loosen the bleed screw, then have an assistant apply the brake pedal slowly and hold it down. Close the bleed screw, then release the brake pedal. Repeat the sequence until all air is expelled from the caliper or cylinder.
    4. When finished, tighten the bleed screw to 97 inch lbs. (11 Nm) for the front, or 66 inch lbs. (7.5 Nm) for the rear.
  3. Check the pedal for a hard feeling with the engine not running. If the pedal is soft, repeat the bleeding procedure until a firm pedal is obtained.
zjlimited_349.jpg

Fig. 1: Loosen the front brake line in order to bleed the master cylinder

zjlimited_350.jpg

Fig. 2: Connect a bleed hose from the bleed valve on the front caliper to a jar of brake fluid

zjlimited_351.jpg

Fig. 3: Always follow the lettered sequence when bleeding the hydraulic brake system





Hope this helps to solve it; remember to rate this answer.

Dec 29, 2010 | 1997 Saturn SL

1 Answer

How to bleed brakes on 2002 toyota sienna


Here is the procedure from the service manual. I would add just one thing. Do each wheel in this order

  1. right rear wheel
  2. left rear wheel
  3. right front wheel
  4. left front wheel
BLEEDING

HINT: If any work is done on the brake system or if air in the brake lines is suspected, bleed the air from the system.

NOTICE: Do not let brake fluid remain on a painted surface. Wash it off immediately.


a)FILL BRAKE RESERVOIR WITH BRAKE FLUID Fluid:SAE J1703 or FMVSS No. 116 DOT3

b)BLEED MASTER CYLINDER HINT: If the master cylinder has been disassembled or if the reservoir becomes empty, bleed the air from the master cylinder.

c)Disconnect the brake lines from the master cylinder. SST 09023-00100 Slowly depress the brake pedal and hold it.

Block off the outlet plug with your finger and release the brake pedal.
Repeat (b) and (c) 3 or 4 times.


BLEED BRAKE LINE

1. Connect the vinyl tube to the caliper or wheel cylinder bleeder plug.
2. Depress the brake pedal several times, then loosen the bleeder plug with the pedal held down.
3. At the point when fluid stops coming out, tighten the bleeder plug, then release the brake pedal. Torque: (Bleeder plug) Front brake caliper
: 8.3 Nm (85 kgf-cm, 74 inch lbs.) Rear wheel cylinder: 8.5 Nm (87 kgf-cm, 75 inch lbs.)
4. Repeat (b) and (c) until all the air in the fluid has been bled out.
5. Repeat the above procedure to bleed the air out of the brake line for each wheel.

CHECK FLUID LEVEL IN RESERVOIR Check the fluid level and add fluid if necessary. Fluid: SAE J1703 or FMVSS No. 116 DOT3

Jun 25, 2010 | 2002 Toyota Sienna

3 Answers

I replaced a master cylinder on a 2001 taurus and bench bled the master cylinder before putting it on the car. then bled the 2 lines at the master cylinder and i am getting air out of the front line on...


try disconnecting the front line, have someone else then step on the brake pedal and hold it down while you re-install the line. If that doesn't do it, you probably did get a defective master cylinder.

Mar 07, 2010 | 2001 Ford Taurus

1 Answer

Got answer to my question about air in brakes but how do you bleed the master cylinder?


to bleed the brake line somebody as to pump the brake pedal
3 to 4 times and somebody opens the bleeder on the brake caliper

starting by the right rear wheel, then the left rear wheel, then front right wheel anf finishing with the front left wheel bleeder.

to bleed the master cylinder is the same principle pump pedal 3,4 times
but this time open the line at the master cylinder starting with the rear hoses

hope it is helpful

Jul 08, 2009 | 1999 Cadillac DeVille

2 Answers

Brake calipers


have you tried with a freind open bleeder press brake close bleeder let go of brake some cars absolutley need to be bled in that order

Jun 19, 2009 | 1990 Chevrolet Suburban

1 Answer

Unable to bleed front brakes


loosen the front brake line that goes to the master cylinder fill master cylinder up with fluid and bleed it first by attaching a flexible line from master cylinder front brake side submerge that line into jar of brakefluid keeping air from entering line get someone to pump brake pedal while ur holding line in a jar keep refilling the brake resivoir so no air gets in, once the master is bled front brake side then reattach the origional brake line then remove bleed screw from caliper and let fluid gravity flow down to calliper then bleed the normal way. more than likely your master cylinder has air trapped in the front portion good luck

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