1998 LINCOLN TOWN CAR

Typical onset: 80,000-150,000 mi

Symptoms: Coolant puddle under front of engine, passenger side, Overheating, sometimes sudden and catastrophic, White steam from under hood, sweet smell, Low coolant warning with no visible external leak initially

Fix: Replace entire intake manifold assembly with revised aluminum crossover design (Ford Motorsport or Dorman upgrade). Requires upper intake removal, coolant flush, thermostat replacement while you're in there. 4-6 hours labor for experienced tech, 8+ for DIY first-timer.

Estimated cost: $800-1,400

Typical onset: 100,000-180,000 mi

Symptoms: Rear end sags overnight or after sitting, especially one corner, Compressor runs constantly or cycles every few minutes, 'Check Air Suspension' warning on cluster, Harsh ride, bottoming out over bumps

Fix: Compressor relay and dryer fail first, then bags crack at folds and airlines rot. OEM compressor replacement 2-3 hours, air springs 1.5 hours each corner. Many owners convert to coil springs ($250 kit, 3-4 hours) to eliminate system entirely.

Estimated cost: $600-1,800 repair, $400-700 coil conversion

Typical onset: 90,000-140,000 mi

Symptoms: ATF puddle at radiator or along frame rail passenger side, Low fluid causes delayed engagement, slipping, or no reverse, Pink milkshake in coolant overflow if internal radiator leak (catastrophic), Transmission overheating, burnt smell

Fix: Steel cooler lines rust through where they contact frame or near quick-disconnect fittings at radiator. Replace both lines preemptively—they're cheap insurance. If radiator cooler fails internally and mixes coolant/ATF, you're looking at transmission rebuild. 2-3 hours for lines, 12-18 for trans overhaul.

Estimated cost: $300-500 for lines only, $2,200-3,500 if transmission damaged

Typical onset: 120,000+ mi

Symptoms: Heat only from one side, AC from the other (dual-zone gone wrong), Clicking or grinding noise behind dash on startup, Temperature control ineffective, stuck on hot or cold, Automatic climate control display shows dashes or wrong readings

Fix: Plastic blend door actuators strip gears, and the EATC module itself develops cold solder joints. Actuator replacement requires partial dash removal, 3-5 hours. Module repair/replacement 1-2 hours but often needs specialist soldering or eBay replacement unit.

Estimated cost: $400-900

Typical onset: 80,000-130,000 mi

Symptoms: Clunking over bumps, especially during turns, Wandering steering, excessive play, Tire wear on inside edge, Visible grease boot torn, rust around joint

Fix: Ball joints are pressed into control arms; Ford issued recall 00S17 but many cars outlived the window. Alignment required after replacement. 2.5-3.5 hours per side if just doing joints, but control arms with new joints pre-installed save hassle. Do both sides when one fails.

Estimated cost: $500-900 for both sides with alignment

Typical onset: 110,000-170,000 mi

Symptoms: No-start or extended crank, especially when hot, Stalling at idle or under load after warm-up, Fuel gauge erratic, pegged full or empty regardless of actual level, Whining noise from rear seat area

Fix: Pump assembly drops from top through trunk floor access (no tank drop needed—Panther platform win). Replace pump, strainer, and sending unit together. 2-3 hours. Sending unit alone fails more often than pump but dealers don't sell it separately anymore.

Estimated cost: $500-800