1975 PLYMOUTH FURY

Typical onset: all mileages—age-related

Symptoms: hard starting when warm, random stalling at idle, poor fuel economy, hesitation under load, no-start conditions with spark present

Fix: The factory Lean-Burn computer and dual-pickup distributor are notoriously unreliable after 40+ years. Most techs retrofit a standard electronic ignition distributor and bypass the computer entirely. 2-3 hours labor including timing adjustment and test drive.

Estimated cost: $350-600

Typical onset: 80,000-150,000 mi

Symptoms: rattling from front of engine on cold start, rough idle, backfiring through carburetor, difficulty starting, timing keeps drifting retarded

Fix: Chrysler timing chains from this era used nylon-coated cam gears that deteriorate. Requires complete timing set replacement with metal gears, new chain, and oil pump inspection while you're in there. 4-6 hours labor depending on engine access and A/C complications.

Estimated cost: $600-1,200

Symptoms: flooding when hot, high idle that won't drop, black smoke from exhaust, fuel smell in garage, hesitation off idle

Fix: Ethanol fuel destroys original gaskets, diaphragms, and accelerator pump components. Full carburetor rebuild kit installation takes 3-4 hours with proper adjustment and tuning. Many shops recommend replacement with remanufactured unit instead.

Estimated cost: $400-800

Symptoms: clunking from front suspension over bumps, uneven ride height side-to-side, one corner sits noticeably lower, popping sound when turning

Fix: The torsion bar anchors in the lower control arms rust through on cars from salt-belt states. Requires replacement of lower control arms or anchor rebuilding. Alignment mandatory afterward. 5-7 hours labor per side including alignment.

Estimated cost: $800-1,500

Symptoms: visible rust holes in floor from inside, spongy feel when stepping on floor, water intrusion in interior, rocker panels crumbling when touched

Fix: C-body Mopars trap moisture in rocker channels and front floor supports. By now, most survivors need metal fabrication and welding. Not a DIY job unless you have welding skills. 15-30 hours labor depending on extent, plus metal and paint.

Estimated cost: $2,500-6,000

Typical onset: 70,000-120,000 mi

Symptoms: power steering fluid puddles under car, groaning when turning wheel, stiff steering when cold, burning smell from engine bay

Fix: Pump seals dry out and high-pressure hoses crack with age. Pump rebuild or replacement plus new hoses. 2-3 hours labor. Use proper ATF+4 or period-correct fluid to prevent seal damage.

Estimated cost: $350-650

Symptoms: dim headlights at idle, battery light flickering, overcharging—new battery boils over, no-charge condition, ammeter shows extreme discharge

Fix: Chrysler's external voltage regulators fail from heat cycling and corrosion. Alternator brushes wear and diodes short. Replace both together and inspect all wiring connections at bulkhead connector. 1.5-2.5 hours labor.

Estimated cost: $250-500

Typical onset: 60,000-100,000 mi

Symptoms: delayed downshift when flooring accelerator, transmission won't downshift for passing, harsh 2-3 upshift, slipping between gears under load

Fix: The throttle-pressure rod linkage wears at pivot points and goes out of adjustment. Requires proper adjustment per factory procedure—critical for transmission longevity. If ignored, causes internal clutch damage. Adjustment takes 0.5-1 hour if accessible, but often requires removing air cleaner and heat shields.

Estimated cost: $80-200