1999 Ford Ranger with 4 wheel ABS. I replaced the brakes on all four wheels and the rear wheel cylinders. The rear brake lines were open individually for a very brief time, and bled conventionally. I would like to know if I still have to take the truck to a repair shop to get the ABS light reset.

A master cylinder is supposed to be bench bled first to get the air out of the primary and secondary bores in the cylinder if you didn't do this there's air in the cylinder also you may have blown the seals inside it try to bench bleed it if you feel no pressure on the master cylinder plunger after bleeding it the seals are blown and you need another one ////\\\\if you do feel the pressure after bleeding and after installing it and bleeding the lines at all wheels and there is no pedal pressure the brake booster is the problem

Replace slave cylinders--both sides.

Did you remember to bleed your brake system?

If the brakes work but you have to push very hard, try checking the vacuum supply to the brake booster with the engine running.

The rear brake cylinders are located inside the hub with the brake shoes on drum brakes...(common in 2004 Rangers on rear only) The brake cylinders are a "wear item" with seals...we used to rebuild the cylinder with new seals...best today to buy new brake cylinders to replace the leakey ones...You will need to bleed all 4 brake line/wheel connections after the replacement. Hope this helps.

YOU NEED A SCAN TOOL TO BLEED BRAKES.THE SCAN TOOL REACTIVATE HYDRALIC BRAKE MOTOR.YOU CAN RAISE VECHICLE WHEELS OFF GROUND SUPPORT SECURE SAFELY. ALLOW DRIVE WHEEL SPIN 5 MILES AN HOUR WHILE VECHICLE OFF GROUND THE WHEEL SENSORS WHILE WHEELS SPINNING WILL ACTIVATE ABS HYDRALIC MOTOR TO BUILD UP BRAKE FLUID PRESSURE.THEN LOWER VECHICLE TO GROUND.MAKE SURE MASTER CYLINDER BRAKE FLUID LEVEL CORRECT THEN BLEED BRAKES IF BRAKE DONT FEEL FIRM OR SOLID DONT DRIVE HAVE VECHICLE TOWED IN.GARAGE WILL HAVE TO USE SCANNER TO BLEED BRAKES.

Replace the broken line then, you must bleed the entire brake system , each wheel works by itself on these cars, . Put the rearend in the air get the tires off and then find where the lines go into the ABS unit. Bleed fliud there first, then the individual wheel cylinders in the rear. after you bleed the system, check to make sure the brake system is balanced.

without a bleeder pump it is hard to do but you can do it by disconnecting the lines one at a time on the side going to the wheels, start the car have someone press on the brake and crack the line open do this till the air is out of the first line then go to next line and do all four lines, once you have done this then you will have to bleed the wheel cylinders starting from right rear or passenger side rear wheel the driver side wheel then passenger front side then driver side front, you will need engine running to power bleed the system, just stepping on the brake pedal without it running won't work, be sure not to let it run out of fluid as your bleeding the system or you could damage the abs system or the brake master cylinder.

You bleed it like you would a normal system but you must use the boost assist to do it, in order to do this start the truck pump the brakes three times and bleed that cylinder farthest away from the master cylinder do this twice or until you get clear fluid to run out. add fluid for every cylinder before moving on. Do this for each wheel and after doing all four wheels you should be ready to go. If it feels mushy you will have to bleed it a second time. But you must have the engine running to bleed the brakes unless you have a power bleeder. You may want to bleed the master cylinder first to do this add fluid to the cylinder then pump brakes three times crack the front line open and allow it to bleed air rout of the line do the same for the rear master cylinder once yo get solid fluid from the master cylinder you can dot the same for the ABS then do the wheel cylinders and wheel calipers. This needs to be done sometimes, be sure to never let the master cylinder run out of fluid and check it each time you bleed the wheel cylinders.

sounds like you need to replace the wheel cylinders also check brake shoes and adjust properly upon reassembly