Question about 1999 Oldsmobile 88

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Had a bad break line replaced bleed back and then moved to front still no brakes it has abs antiloc braking system is there away to reset system

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ABS BRAKE BLEEDING YOU NEED A TECH 2 SCANNER TO BLEED BRAKE.THIS PROCEDURE WILL WORK SOME TIMES BUT BEST TO HAVE A TECH 2 SCANNER.PARK CAR ON SOLID LEVEL GROUND.SAFELY RAISE SUPPORT VECHICLE ON JACK STANDS.MAKE SURE BRAKEMASTER CYLINDER HAS FULL BRAKE FLUID NOT OVER FILLED.THIS PROCEDURE WILL ACTIVATES ABS BRAKE MODULE RETURN PISTON TO HOME POSITION.SET PARKING BRAKE.NOW START UP ENGINE.APPLY BRAKES SHIFT CAR IN DRIVE ALLOW FRONT WHEELS TO SPIN 5 TO 10 MILES AN HOUR WHEELS IN MOTION WILL ACTIVATE ABS BRAKE MODULE. NOW APPLY BRAKES SHIFT CAR BACK IN PARK AND MANUAL BLEED ALL THE BRAKES.IF THIS PROCEDURE DONT WORK.HAVE VECHICLE TOWED IN AND HAS BE PRESSURE BLEED .AND A TECH 2 SCANNER HAS TO BE USED TO RESET ABS BRAKE MODULE PISTONS TO HOME POSITION.DONT TRY DRIVING VECHICLE.IF ABS BRAKES AND BRAKES SYSTEM NOT WORKING.

Posted on Mar 19, 2011

  • Jonah Oneal Mar 19, 2011

    TURN OFF CAR WHEN YOU SHIFT CAR BACK IN PARK FROM THE ABOVE INFORMATION I GAVE YOU THEN MANUAL BLEED BRAKE SYSTEM.LONG AS YOU SEE ABS OR BRAKE WARNING LIGHTS BRAKE SYSTEM IS NOT WORKING.

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Master cyclender working ok?

Posted on Mar 19, 2011

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1 Answer

Brake and abs light on,came on when a line burst,abs has been unplugged for three years,that light i can live with,the service brake system flashing on dash,is a pain,2003 2wd,silverada


You need to put a scanner on the ecm/computer for the truck and reset or delete the code in the computer. This is all assuming the broken line has been fixed and the lines bleed. The abs light is for the brake system and there is a valve in the line that when the line breaks it shuts off the line in the front or rear of the truck that has a break in it. You need to be sure the valve is shifted to the center position again and this will usually happen when you bleed the fluid after fixing the line or you will need to replace the valve in the brake line. Hope this helps.

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ABS light and traction light and no cruise control


how on earth would the blind know what is wrong.?
scan it? yet?
btw, newer cars cut cruise feature for any signs of danger.
new laws...
the traction needs ABS to work ,so forget that and fix ABS.
ABS needs 2 things to work , brakes and ABS.

so if brakes are bad, then ABS will get upset.
after all, if it cant brake right, how can the puter save you?
if brakes are known to be ok (inspections work here)
but in this case it was BREACHED by you, with out reading the book first.
then scan the ABS. (omg? code for dead sensor?) nah, you caused it..
easy

ABS resets every key on. so...
my guess, if ABS was happy before your actions( you never said)
then you got air in to the system. and failed to follow the FSM instructions on bleeding brakes, in ABS car.

front caliper, did you block the hose with cap, so it didn't allow air to the modulator? oops... never just let them drip... or . max pain.
bleed it again, (using any or all 5 ways to do so, bleeding is skill thing) (many modulators can not just be simply bled)

now Ill quote the 2012 fSM for you , under brakes

Data: -----------------------------------------------------------------
ABS Brake Bleeding
STANDARD PROCEDURE - ABS BRAKE BLEEDING

ABS system bleeding requires conventional bleeding methods plus use of a scan tool. The procedure involves performing a base brake bleeding, followed by use of the scan tool to cycle and bleed the HCU pump and solenoids. A second base brake bleeding procedure is then required to remove any air remaining in the system.

Perform base brake bleeding, (Refer to Brakes - Standard Procedure)(Refer To List 1).

Connect scan tool to the Data Link Connector.

Select ANTILOCK BRAKES, followed by MISCELLANEOUS, then ABS BRAKES. Follow the instructions displayed. When scan tool displays TEST COMPLETE, disconnect scan tool and proceed.

Perform base brake bleeding a second time, (Refer to Brakes - Standard Procedure)(Refer To List 1).

Top off master cylinder fluid level and verify proper brake operation before moving vehicle.

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anytime you open a brake system you should bleed the back furtherst away first then the work forward , easy

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My breaks wont work after changing the front rotars, calipars and pads. I bleed all four breaks starting with the back passenger side then back drivers side then front passenger side then front drivers...


As a general rule, if you have ABS you might have to cycle the pumps and valves to purge the old fluid out of the unit. This is either done via a dealer scan tool, a purge valve/bleeder valve on the ABS unit, or a less than ethical way. Drive your car and heavily engage the ABS, you know what I'm talking about.
Then you will need to repeat the bleeding process that you have already done.
Normal non ABS brakes, bleed once.
ABS brakes, bleed, cycle then bleed again.

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Ok here is what you have to do. First off make sure your master cylinder is full, Second your vehicle must be running when you bleed brakes that is equiped with ABS this allows the ABS pump to to run you must bleed both front brakes starting at the passenger side wheel then moving to the drivers side. It will take quit a bit of bleeding and be sure to keep checking fluid level in master cylinder well bleeding. Just remeber the vehicle must be running while bleeding the brakes.

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If I remove a break line from one caliper for replacement, do I need to bleed the breaks on all four wheels or only the one that I have replaced the break line on?


When replacing any brake components it's always a great idea to bleed the brakes. Because your life depends on the serviceability of your brake system. When you open, crack or brake any line in your brake system, you automaticity introduce air into the system. Air can be compressed easily as opposed to brake fluid, which is designed not to compress as well as resist heat. The air in your system will cause your ABS and sensors to malfunction and or not work at all. When bleeding your brake system use this sequence start with: 1)right rear, 2)left rear, 3)front right, 4)front left. All vehicle parts and locations are referred to as the vehicle's left and right sides. Or as your setting in the drivers seat. Hope that helps.

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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...


SOUND LIKE FAULTY ABS UNIT AND WHEEL SENSORS OR MASTER CYLINDER.THE MASTER CYLINDER PISTONS NOT RETURNING.RAISE THE REAR OF VECHICLE BLOCK FRONT WHEELS FROM MOVING.MAKE SURE PARKING BRAKE IS FULLY RELEASED SO YOUR BRAKE BRAKES NOT DRAGGING.THE BACK WHEELS SHOULD TURN WITH BRAKE RELEASED.IF NOT PARKING BRAKE NEEDS ADJUSTMENT.

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