Question about 1995 Oldsmobile Eighty Eight

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Can i bypass the abs unit? I had a master cylinder put in and the mechanic is saying that the left front brake is not releasing and that i need a new ebcm

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Are you sure it isn't a bad brake hose?

Posted on Jul 14, 2010


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Yadayada said my problem was the hydralic valve for the ABS well i changed that out and the brakes are still not releasing on the front wheels.

the problem will be in the master cylinder --blocked compensating ports not releasing the fluid back to the reservoir

Jun 06, 2018 | Cars & Trucks

1 Answer

Spongy brake pedal 1998 Ford Windstar

The ABS is a different computer and there is nothing for the Master cylinder. Some scanners need added programming to read the ABS circuit.

Feb 03, 2013 | 1998 Ford Windstar

1 Answer

92 cadilac left front brake caliper locking up installed new caliper same problem

check your pressure hose connected to the caliper,also check whether your brakes master cylinder is not faulty,abs sending unit ,or if you have changed the brake pads in front see whether the back metal side of the pad is fair face and not any curve or uneven surface,because had happened to me .

Aug 25, 2012 | Cars & Trucks

1 Answer

Still cant get a brake pedal.. been bleeding the lines but not getting much out of them. replaced master cylinder, still no pedal. has all new lines also

you may have to run the motor as you bleed the brakes so the abs hydraulic unit can purge any air that might be caught within the unit itself.did you bench bleed the master cylinder before installing it on the car.this can save time and reduce the possible chance of air entering the system.make sure you don`t allow the master cylinder to run low on brake fluid.i also assume that you are bleeding the brakes properly.Left front brake works with Right rear brake and Right front brake works with Left rear brake.this is how the brakes should be bleed.

Mar 15, 2011 | 1997 Buick LeSabre

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.

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


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


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

I have a Ford E-150 Fullsize van. Having a problem with front brakes. Replaced a couple of times within a year. Need a answer on what might be the problem. Also have a problem with the abs system. any...

Was kinda wondering what the ABS problem is. The Master cylinder should be pressure tested as a start. On some models the rod in the power brake booster is adjustable. If the Booster rod does not have some slack in it, your brakes will not be completely off. It is also possible that the Master cylinder is not returning to the Neutral position because the pistons inside the Master cylinder are hanging up.

When you pressure test a Master cylinder you will find the fluid pressure from each port in the Master cylinder. You will also see if there is zero pressure when the Brake pedal is not touched. So this clears the problem to the next testing area. The ABS unit. There are diagnostic plugs for the ABS which will describe a problem and it will be tested Electrically. The same problems about sticking pistons that can be in the Master cylinder, can also exist inside the ABS unit. You mechanic may want to pressure test each one of the ABS ports.

By this point you should have some idea how much pressure is going to the back and front brakes.
You will know if the back brakes are fully functional or not. The only thing left after this would be hanging Calipers that do not return to a neutral position. I am sure you know the feel of Warped Rotors. They can be a sign that the Pads are always dragging.

Front wheel bearings. Often overlooked for Brake wear, if the wheel bearings are too loose the Rotor will not run Perpendicular to the front spindle. The rotors can "canter" slightly and rub the pads.

Take a look at the NAPA rotors on their first line parts. Check the thickness of their cooling fins on their rotors and the amount of metal on the rotor surface Try to get Lifetime Warranty pads from whomever you use. These 2 things will save you money in the longrun.

I hope I have given you some new ideas to fixing your Van. Thanks for using Fixya.

Nov 26, 2010 | 2003 Ford E150

4 Answers

I have an 06 jetta, 2.5l. does not have electronic parking brake. the brakes on all 4 wheel are dragging. you can open any bleeder and get a little squirt. wheels will spin freely. when you drive it again...


Oct 29, 2010 | Volkswagen Jetta Cars & Trucks

1 Answer

1996 Oldsmobile Cutlass Ciera - brakes

OK, if the ABS light is on one should scan it with an OBD-II ABS Brake Scan tool like Actron's ($99 to $116 on

This will likely tell you which wheel has a bad speed sensor.

There could be an internal fluid leak on the master cylinder which needs to be addressed before it's safe to drive.

It would be nice to have the ABS portion of your braking system fixed at the same time.

You may be looking at a new ABS Brake Wheel Speed Sensor which is sometimes put into the hub permanently (requiring a new hub).

Jul 27, 2010 | 1996 Oldsmobile Cutlass Ciera

1 Answer

2005 ford f350 4*4 hard pull to left .I have

When you say it pulls to the left, I am assuming only when the brakes are applied. And if the pull problem was there before you replaced the calipers, it is a problem like a plugged primary brake line from the master cylinder or proportioning valve. The master cylinder could be bad. The new right caliper could be bad. Need to disconnect hoses closer to master cylinder and hit brakes to see if fluid flows good. Then follow hoses down and repeat.

If this happened after the new pads were put on sometimes the pad length is different on the inner and outer pad and both longs on one side will grip more than the 2 short pads on the other side.

If this pulls without brakes on you may have stuck left 4x4.

Jan 14, 2010 | 2005 Ford F 350 Super Duty

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