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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 Mercury Grand Marquis car and truck
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BRAKE SERVICE PROCEDURES FOR 2003 Mercury Grand Marquis AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2003 Mercury Grand Marquis cars and light trucks from 1990+.
Disc Brakes -> Rear Disc & Parking Brakes -> Description -> Continental, Cougar, LS, Mustang, Sable & Taurus -> Contour & Mystique -> Crown Victoria, Grand Marquis, Marauder & Town Car -> Escort, Tracer & ZX2
Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS
Continental, Cougar, LS, Mustang, Sable & Taurus
Sliding caliper rear disc brakes are used on these models. The caliper is basically the same as the larger front wheel caliper. However, a parking brake mechanism and a larger inner brake shoe anti-rattle spring have been added.
The parking brake lever, located at the rear of the caliper, is actuated by a cable system similar to rear drum brake applications. When the parking brake is applied, the cable rotates the lever and operating shaft, driving the caliper piston and brake shoe assembly against the rotor. An automatic adjuster in th...
CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Grand Marquis BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2003 Mercury Grand Marquis AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2003 Mercury Grand Marquis cars and light trucks from 1990+.
Hydraulic Brake Systems -> Hydraulic Brake System Specifications
Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS
CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Grand Marquis BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2003 Mercury Grand Marquis AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2003 Mercury Grand Marquis cars and light trucks from 1990+.
Anti-lock Brakes -> Crown Victoria, Grand Marquis, Marauder & Town Car -> Diagnosis & Testing -> 1999 -> 1999-2000 -> 2000 -> 2001 -> 2002 -> 2003 -> Accessing Diagnostic Trouble Codes -> Clearing Diagnostic Trouble Codes -> Crown Victoria, Grand Marquis & Marauder -> Diagnostic Procedure -> Diagnostic Trouble Code Interpretation -> Pinpoint Tests -> Quick Checks -> Town Car -> Wiring Diagrams
Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS
Diagnostic Procedure
Ensure the following diagnosis procedures are used in the sequence and step-by-step order indicated. Following the wrong sequence or bypassing steps will only lead to unnecessary replacement of system components and/or incorrect resolution of the problem. The diagnostic procedure consists of five sub-tests: Pre-test Checks, On-Board Self-Tests, Manual Quick Tests, Warning Lamp Symptom Chart and the Diagnostic Tests.
Accessing Diagnostic Trouble Codes
The anti-lock brake/traction assist electronic control module is capable of performing a self-test using New...
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BRAKE SERVICE PROCEDURES FOR 2003 Mercury Grand Marquis AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2003 Mercury Grand Marquis cars and light trucks from 1990+.
Disc Brakes -> Front Disc Brakes -> Inspection
Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS
Remove wheels and inspect brake disc, caliper and linings. Inspect wheel bearings and repack if required.
If the caliper is cracked or fluid leakage through the casting is evident, it must be replaced as a unit.
If caliper is removed when installing new components, clean all components in alcohol, then wipe dry using lint-free cloths. Blow out drilled passages and bores with compressed air. Inspect dust boots for punctures or tears, replace as required.
Inspect piston bores in both housings for scoring or pitting. Bores showing light scratches or corrosion can be cleaned with crocus clo...
CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Grand Marquis BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2003 Mercury Grand Marquis AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2003 Mercury Grand Marquis cars and light trucks from 1990+.
Hydraulic Brake Systems -> Component Service -> Assemble -> Disassemble -> Inspection -> Master Cylinder Overhaul -> Overhaul -> Wheel Cylinders
Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS
Master Cylinder Overhaul
Disassemble
- Clean outside of master cylinder thoroughly. Drain brake fluid from master cylinder.
- Remove stop bolt and pressure control valves, if equipped.
- Pry up on reservoir and remove it from master cylinder body.
- Remove fluid control valve, if equipped.
- Depress primary piston and remove snap ring from retaining groove at open end of bore.
- Remove primary and secondary piston assemblies from master cylinder. If secondary piston does not come out, apply air pressure to secondary outlet port to remove.
Inspection
When disassembled, wash all parts in clean brake...
CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Grand Marquis BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2003 Mercury Grand Marquis AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2003 Mercury Grand Marquis cars and light trucks from 1990+.
Hydraulic Brake Systems -> Component Replacement -> 1999 -> 2000-03 -> Continental, Crown Victoria, Grand Marquis, Marauder, Mustang & Town Car -> Contour, Cougar & Mystique -> Escort, Tracer & ZX2 -> Focus -> Installation -> LS & Thunderbird -> Master Cylinder -> Removal -> Sable & Taurus -> Wheel Cylinders
Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS
Master Cylinder
Continental, Crown Victoria, Grand Marquis, Marauder, Mustang & Town Car
- Depress brake pedal several times to exhaust all vacuum in system.
- Disconnect brake lines from master cylinder, then all required electrical connectors.
- Disconnect hydraulic control unit supply hose at master cylinder. Secure hose in a position to prevent brake fluid loss.
- Remove two bolts which attach proportioning valve bracket to brake master cylinder. Secure proportioning valve and tubes in a position to prevent damage or loss of brake fluid.
- Remove nuts retaining master cylinder to brak...
CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Grand Marquis BRAKE SERVICE PROCEDURES
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