1992 ROLLS-ROYCE SILVER SPIRIT

Typical onset: any mileage on neglected cars

Symptoms: Suspension drops overnight or sags at one corner, Hard brake pedal or loss of brake assist, Hydraulic pump runs constantly, Green hydraulic fluid leaks under car

Fix: Hydraulic pump rebuilds run 12-16 hours, accumulators 3-4 hours each (two required), suspension spheres 2-3 hours per corner. Most cars need multiple components simultaneously due to contaminated fluid damaging seals throughout the system. Complete system overhaul including flush is typical.

Estimated cost: $4,000-8,000

Typical onset: 80,000-140,000 mi

Symptoms: Transmission fluid mixing with coolant (strawberry milkshake in expansion tank), Delayed or harsh shifts, No downshift on acceleration, Overheating transmission

Fix: Oil cooler replacement requires radiator removal, 8-10 hours labor. Kick-down cable adjustment or replacement is 2-3 hours but critical for proper shift points. Ignoring cooler failure destroys the transmission, requiring rebuild at 25-35 hours.

Estimated cost: $1,800-3,200 for cooler; $8,000-12,000 if transmission damaged

Typical onset: 60,000-100,000 mi

Symptoms: Oil pooling under rear of engine, Oil dripping onto exhaust causing smoke, Low oil warnings, Oil coating undercarriage

Fix: Rear main seal requires transmission removal, 16-20 hours. Valley pan gaskets (between cylinder banks) need intake manifold removal, 10-12 hours. Often both are done together since labor overlaps. Engine fundamentally sound but seals age out.

Estimated cost: $3,500-5,500

Typical onset: any age on cars sitting long periods

Symptoms: Fuel smell in cabin or garage, Inaccurate fuel gauge, Hard starting or stumbling, Fuel leaks visible along chassis rails

Fix: Rubber fuel lines rot from inside out on these cars. Complete line replacement from tank forward is 8-12 hours. In-tank pump and sending unit access requires tank drop, add 4-6 hours. Filter housing cracks are common, 2 hours to replace.

Estimated cost: $1,500-3,000

Symptoms: Constant warning chimes, Ride height sensor errors, Instrument cluster lights flickering, Intermittent gauge failures

Fix: Ride height sensors fail frequently, 1-2 hours each. Wiring harness corrosion under carpets causes bizarre electrical gremlins, diagnosis is time-consuming (3-6 hours typical). Many shops throw parts at these; find someone with proper Rolls diagnostics.

Estimated cost: $500-2,000

Typical onset: 70,000-120,000 mi

Symptoms: No cold air despite charged system, Coolant smell in cabin, Coolant loss with no visible leaks, Fogged windows that won't clear

Fix: Evaporator replacement requires complete dashboard removal, 20-25 hours labor. Heater control valves (two of them) fail and leak coolant into cabin, 4-6 hours to access and replace. These cars have dual climate systems making HVAC work extremely labor-intensive.

Estimated cost: $3,000-5,000 for evaporator; $800-1,500 for control valves

Typical onset: 100,000-150,000 mi or after overheat event

Symptoms: White smoke from exhaust, Coolant consumption without visible leaks, Oil contamination in coolant, Rough idle or misfires

Fix: Head gasket replacement is 18-24 hours, and while heads are off, they should be checked for flatness and cracks. If overheating was severe, expect warped heads needing machine work or replacement. Both heads typically done together. Parts availability can be issue; some shops resort to modern composite gaskets.

Estimated cost: $4,500-7,500