1995 ROLLS-ROYCE CORNICHE

Typical onset: 70,000-120,000 mi

Symptoms: Car sinks on one corner or all four after sitting overnight, Brake pedal feels spongy or requires excessive travel, Hydraulic fluid puddles under engine bay or rear axle, Warning lights for ride height or brake accumulator pressure

Fix: System uses mineral-based LHM fluid for brakes, suspension leveling, and ride control. Common culprits: accumulator spheres (front and rear), height corrector valves, brake master cylinder seals, and steel hard lines rusted at fittings. Complete system overhaul with all spheres, hoses, and seals runs 20-30 labor hours across multiple sessions. Piecemeal fixes often lead to repeat visits as aged rubber fails sequentially.

Estimated cost: $4,000-8,000

Typical onset: 80,000-130,000 mi

Symptoms: Pink or red fluid mixing with coolant in overflow tank, Transmission overheating or slipping after highway runs, Clunking or excessive movement when shifting into gear, Visible transmission sag or misalignment under car

Fix: The GM 4L80E cooler integrated into the radiator corrodes internally, cross-contaminating coolant and ATF—requires immediate flush of both systems, new radiator, and often transmission rebuild if contamination reached clutches. Rubber transmission mounts deteriorate from heat and age, causing drivetrain slap. Cooler replacement: 6-8 hours. Mount replacement: 4-5 hours. If trans is damaged from coolant intrusion, add 18-24 hours for rebuild.

Estimated cost: $2,500-9,000

Typical onset: 90,000-150,000 mi

Symptoms: Oil pooling under engine, especially rear main seal area, Blue smoke on cold start clearing after warmup, Low oil pressure at hot idle (below 20 psi), Metallic ticking from lower end at operating temperature

Fix: The 6.75L develops rear main seal leaks, valve cover gasket seepage, and oil pan gasket weeps as cork and rubber age. More serious: worn main bearings and piston rings from infrequent oil changes or running conventional oil. Head gaskets can weep externally. Minor seal work: 8-12 hours. Full lower-end rebuild with pistons, rings, bearings, and machine work: 40-50 hours plus machine shop time. Many engines at this mileage need short block replacement or complete rebuild.

Estimated cost: $1,500-18,000

Symptoms: Hard starting after sitting several days or weeks, Rough idle or stumbling acceleration when cold, Stalling at stops after extended highway driving, Check engine light with fuel trim codes

Fix: K-Jetronic fuel injection relies on fine filtration. Cars stored with old fuel or driven infrequently develop varnish in lines, filter, and fuel distributor. Fuel filter is often neglected (should be every 15k-20k miles). Clogged filter: 1.5 hours. Full system cleaning with injector service and distributor rebuild: 6-8 hours. Fuel pumps rarely fail but check valves can stick.

Estimated cost: $300-1,800

Symptoms: Intermittent no-start with no crank or fuel pump prime, Gauges reading erratically or defaulting to zero, Central locking or windows operating on their own, Warning lights illuminating without corresponding fault

Fix: Lucas and Bosch electronics age poorly. Common issues: corroded grounds behind kick panels, failed relays in fuse box under hood, and dried-out capacitors in ECU causing no-start. ECU repair/rebuild by specialist: 4-6 weeks turnaround, $600-1,200. Chasing electrical faults can consume 5-10 diagnostic hours if multiple systems involved. Replace all relays and clean grounds proactively.

Estimated cost: $400-2,500

Typical onset: 60,000-110,000 mi

Symptoms: Harsh or delayed 2-3 or 3-4 upshifts, Transmission stuck in limp mode (third gear only), Intermittent flaring between gears, Check engine light with transmission codes

Fix: GM 4L80E solenoids fail from heat cycles and fluid contamination. Replacing all solenoids requires pan drop, filter change, and fluid flush: 4-5 hours. Adaptive values in TCM may need reset with factory-level scan tool. If internal clutches are worn from delayed shifts, expect full rebuild. Preventive fluid changes every 30k miles reduce risk significantly.

Estimated cost: $800-1,200