Rear abs light flashes/ front right brake

It could be a faulty brake master cylinder though your description does remind me of a car that had the disc pads wrongly fitted and the anti-rattle springs were pushing the pads away from the discs instead of providing resistance.

A similar symptom can be experienced when a wheel bearing has excess free play and pushes the pads away from the disc.

I would use a hose clamp and isolate each brake in turn until the brake pedal operation is normal. If no clamping operation makes a significant difference I would then clamp two, three and then four hoses when if there is still no difference I would suspect the master cylinder or the basic brake pedal and servo adjustments.

I can't think of a reason why the battery change should cause that light to flash. The ABS (Anti-lock Braking System) has a separate computer, probably under the hood someplace. Many of these have the word "reset" somewhere on the computer. Often if you hold a small magnet next to the word "reset" it may clear the computer and turn off the light.
There are ways to get the "fault codes" from the ABS by activating combinations of controls - like cruise control in combination with odometer, for example. The combinations are not logical. Search online for ABS and your car's make and model and you should find the instructions for getting and interpreting the codes. As an example three flashes of the ABS light followed by two more might mean right rear wheel sensor.

Brake Drums & Brake Shoes Removal & Installation To Remove:
Rear Drum Brakes

1. Raise and safely support rear of vehicle.
2. Release parking brake.
3. Remove rear wheel assemblies. NOTE: If brake drum is stuck, install two 8 mm bolts into threaded holes and tighten evenly.
   
4. Remove top return spring, front and rear shoe spring clips and hold-down pins.
5. Remove anti-rattle spring and adjuster spring. NOTE: Note position of operating lever prior to removal.
   
6. Remove bottom return spring.
7. Remove clip and washer and detach parking brake cable from rear shoe.
8. Remove brake shoes.

To Install:

1. Lubricate all brake shoe contact points with appropriate grease.
2. Place operating level into position on hub.
3. Install rear brake shoe and connect parking brake cable to rear shoe with washer and clip.
4. Install front brake shoe and install bottom return spring.
5. Install hold-down pins and spring clips.
6. Position operating lever and install top return spring.
7. Install anti-rattle spring and adjuster spring.
8. Install brake drum and screws.
9. Adjust brakes and install rear wheel assemblies.

um, clunking brakes when braking after you repaired them? EMERGENCY PROCEDURE REQUIRED Have the car towed to a reputable shop. Your brake pads or calipers or wheel are coming apart. they could fail while driving. This is likely very serious. Hopefully, it is just the anti rattle clips not holding the pads in place but do not chance it. Also, consider a mobile mechanic

Brake Pads
Removal & Installation
Front





3.4L front disc brake assembly









4.0L and 4.7L front disc brake assembly




To Remove:

1. Before servicing the vehicle, refer to the precautions in the beginning of
   this section.
   
2. Remove or disconnect the following:
   
   
   
   • Front wheel
     
   • Clip, 2 caliper pins, the anti-rattle spring then remove the 2 brake pads
     and the 4 anti-squeal shims

To Install:

CAUTION
Only replace brake pads on 1 side of the
vehicle at a time. Failure to use this procedure could cause the caliper pistons
on the opposite side of the vehicle to pop out requiring the reconditioning or
replacement of the brake caliper.

1. Remove a small amount of brake fluid from the master cylinder.
   
2. Install a used brake pad into the caliper and compress the caliper pistons.
   
3. Apply disc brake grease to both sides of the inner anti-squeal shims.
   
4. Install or connect the following:
   
   
   
   • Anti-squeal shims to the new brake pads
     NOTE: When replacing worn pads, the anti-squeal shims must be replaced
     together with the pads.
     
     
   • 2 brake pads
     
   • Anti-rattle spring and the 2 caliper pins
     
   • Clip
     
   • Front wheel
   
   
5. Depress the brake pedal several times to seat the brake pads.
   
6. Check the brake fluid level and top off as needed.

Rear
To Remove:

1. Before servicing the vehicle, refer to the precautions in the beginning of
   this section.
   
2. Remove or disconnect the following:
   
   
   
   • Rear wheel
     
     
     
     
     
     
     
     
     
     
     
   • 2 cylinder slide pins from rear caliper assembly
     
   • Caliper assembly from rear caliper mounting
     
   • 2 brake pads with anti-squeal shims from rear caliper mounting
     
   • 2 anti-squeal shims from each disc brake pads
     
   • Pad wear indicator plate from the inner side disc brake pad
     
   • 4 pad support plates from the rear caliper mounting

To Install:

1. Install or connect the following:
   
   
   
   • 4 pad support plates on the rear caliper mounting
     
   • Pad wear indicator plate on the inside brake pad
     Note: Install the pad wear indicator facing downward.
     
     
   • Anti-squeal shims on each brake pad
     
   • 2 disc brake pads with anti-squeal shims to the caliper assembly
   
   
2. Apply lithium soap base glycol grease to the sliding part of 2 caliper slide
   pins.
   
3. Install or connect the following:
   
   
   
   • Disc brake caliper assembly with 2 caliper slide pins
     
   • Torque to 65 ft-lbs (88 Nm)
     
   • Rear wheel
   
   
4. Depress the brake pedal several times to seat the brake pads.
   
5. Check the brake fluid level and top off as needed.

--- Removal & Installation
Front
To Remove:

1. Before servicing the vehicle, refer to the precautions in the beginning of
   this section.
   
2. Remove or disconnect the following:
   
   
   
   • Front wheel
     
   • Front brake caliper assembly
   
   
3. Make matchmarks on the disc and the axle hub.
   
4. Remove the front disc.

To Install:

1. Align matchmarks and disc onto axle hub.
   
2. Install or connect the following:
   
   
   
   • Front brake caliper assembly with the 2 bolts
     
     
     
     1. Torque to 90 ft-lbs (123 Nm)
     
     
   • Front wheel

you have one on the inside of each wheel.
SECTION 206-09A: Anti-Lock Control 2002 Lincoln LS Workshop Manual
REMOVAL AND INSTALLATION Front Wheel Speed Sensor
Material Item Specification RTV Silicone Sealant
FSTZ-19G204-AB (Canada CXC-114A) NAVSTR Sealer
Removal and Installation

1. Raise and support the vehicle. For additional information, refer to Section 100-02 .

1. Position the inner splash shield aside.
   1. Remove the pin-type retainers.
   1. Position the inner splash shield aside.

1. Disconnect the anti-lock brake sensor electrical connector.

1. Remove the anti-lock brake sensor harness from the brake hose clips.

1. Remove the anti-lock brake sensor.
   1. Remove the anti-lock brake sensor clip.
   1. Remove the anti-lock brake sensor.

1. NOTE: Make sure the anti-lock brake sensor is fully seated before installation of the new clip.
   To install, reverse the removal procedure.
   • Apply a 2.5 mm (0.1 in) bead of silicone sealant to the outside diameter of the anti-lock brake sensor.

-------------------------------------------------------------------------
Rear Wheel Speed Sensor Removal and Installation

1. Raise and support the vehicle. For additional information, refer to Section 100-02 .

1. Disconnect the rear anti-lock brake sensor electrical connector.

1. Remove the rear anti-lock brake sensor harness from the control arm clips.

1. NOTE: Clean off dirt and foreign material that may have collected around the rear anti-lock brake sensor before removal.
   Remove the rear anti-lock brake sensor.
   1. Remove the anti-lock brake sensor bolt.
   1. Remove the anti-lock brake sensor.

1. To install, reverse the removal procedure.

sounds like u need front brake pads and rotors i would check brakes first if ok then i would check front wheel bearings but cv joints make a clicking sound usauly when turning

It is picking up a signal from one of the wheel sensors probably.

Go here to read files on ABS issues

http://autos.groups.yahoo.com/group/villagerquest/

• Anti-Lock Brake Warning Indicator Always On

• Fuse(s).
• Circuit.
• Hydraulic solenoid relay.
• Hydraulic pump motor relay.
• Brake anti-lock sensor(s).
• Hydraulic anti-lock actuator assembly.
• Anti-lock brake control module.

• GO to ABS Quick Test .

QT5 PERFORM ABS TROUBLE CODE RETRIEVAL

• Key OFF.
• Jump Pin 4 of the data link connector to ground.
  
  
  
  
• Key ON.
• Observe the anti-lock brake warning indicator.

NOTE: The first code to flash will be the start code (12). Also, each code is repeated three times before proceeding to the next trouble code.

Does the anti-lock brake warning indicator flash codes? Yes No RECORD code(s). GO to the following ABS Trouble Code Identification Chart in this section and PERFORM Pinpoint Test specified for first code retrieved. If indicator is illuminated constantly, GO to Pinpoint Test D1 . If indicator is not illuminated, GO to Pinpoint Test A1 .

abs relay some times go bad