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This guide covers rear shock absorber replacement for the Ford Explorer built between 1991 and 2003. Always consult a factory service manual for your specific model year and trim before beginning work.## Tools and Parts Needed- New rear shock absorbers- Floor jack and jack stands- Socket set and ratchet- Flare nut or combination wrenches- Torque wrench- Penetrating oil- Wire brush## SafetyPark on a level surface, chock the front wheels, loosen the rear lug nuts before lifting, and support the vehicle with jack stands. Never rely on a jack alone.## Replacement Procedure1. Raise the rear of the vehicle and support the rear axle with a floor jack.2. Remove the rear wheels.3. Clean the shock absorber mounting bolts with a wire brush and apply penetrating oil.4. Support the axle so it does not droop enough to damage brake lines.5. Remove the lower shock absorber bolt or nut from the axle bracket.6. Remove the upper shock absorber nut or bolt from the body or frame bracket.7. Remove the old shock absorber and compare the new unit with the old one.8. Install the new shock absorber with new bushings or hardware as needed. Align the stud or bolt before tightening.9. Tighten fasteners to the specifications below while the suspension is loaded or as directed by the service manual.10. Reinstall the wheels, lower the vehicle, and torque the lug nuts.## Typical Torque SpecificationsThese values are common for many 1991-2003 Ford Explorer rear shock applications, but always confirm with the factory service manual:- Upper rear shock nut: 41-54 lb-ft (56-73 Nm)- Lower rear shock bolt/nut: 85-100 lb-ft (115-136 Nm)- Lug nuts: 85-100 lb-ft (115-136 Nm) depending on wheel type## Chassis DTC Codes and DiagnosticsFord chassis codes C1100 and C1200 are sometimes associated with ABS and brake system faults. C1100 can indicate an ABS pump motor failure, while C1200 can indicate a hydraulic brake control fault. After rear suspension work, inspect wheel speed sensor wiring and ABS connectors. Use an OBD-II or OEM-level scan tool that supports Ford ABS and chassis diagnostics. For 2026 model-year support, use diagnostic equipment compliant with current SAE standards and the latest Ford service software updates.## SAE and Service StandardsFor suspension fasteners and diagnostics, follow OEM instructions and applicable SAE recommended practices. A quality torque wrench is essential because shock absorber studs and brackets are sensitive to both over-tightening and under-tightening. When in doubt, use a higher-quality service source such as Ford's workshop manual or a recognized repair database.