1994 PLYMOUTH SUNDANCE

Typical onset: 120,000-180,000 mi

Symptoms: Excessive oil consumption (quart every 500-800 miles), Blue smoke on startup or acceleration, Knocking or rattling from bottom end, especially when cold, Loss of compression in one or more cylinders, Metal shavings visible in oil or filter

Fix: The 2.5L four is notorious for piston skirt wear, worn rings, and spun rod bearings past 140k. Most shops recommend short block replacement or used engine swap rather than rebuild due to block wear. Expect 12-16 hours labor for R&R plus machine work if rebuilding. Used engine swap is 8-10 hours and often more cost-effective.

Estimated cost: $2,200-4,500

Typical onset: 90,000-140,000 mi

Symptoms: Coolant loss with no visible leaks, White smoke from exhaust, Overheating under load or in traffic, Oil contamination in coolant reservoir (milky appearance), Rough idle or misfiring when cold

Fix: The 2.5L develops head gasket leaks between cylinders or into coolant passages. Head removal, milling for flatness, and gasket replacement takes 8-10 hours. MUST check head for cracks and warpage—common on this engine. Often discover additional problems (worn guides, cracked seats) once head is off.

Estimated cost: $1,200-1,800

Typical onset: any mileage (age-related)

Symptoms: Transmission fluid dripping from radiator area, Pink or red fluid on ground under front of vehicle, Low transmission fluid level, Slipping or delayed engagement if fluid loss is severe, Corroded or wet steel lines running to radiator

Fix: The steel cooler lines rust through where they pass near the subframe or at crimp fittings. Requires line replacement (aftermarket or fab custom lines), plus fluid flush. If caught early, 2-3 hours. If transmission ran low on fluid, expect internal damage requiring rebuild. Always replace both lines preventively.

Estimated cost: $300-600

Typical onset: 80,000-140,000 mi

Symptoms: Excessive engine movement during acceleration or braking, Clunking when shifting from Park to Drive, Vibration through floor and steering wheel at idle, Visible engine sag when hood is open, Difficult shifting or grinding in manual transmission models

Fix: Rubber mounts deteriorate and crack, allowing excessive drivetrain movement. Most common failures are front torque mount and right-side engine mount. Replace all three mounts as a set—labor is 3-4 hours. Old mounts often tear completely, causing starter contact with subframe or axle binding.

Estimated cost: $400-700

Typical onset: any mileage (maintenance-related)

Symptoms: Hesitation or stumbling under acceleration, Hard starting after sitting overnight, Stalling at idle or when coming to a stop, Loss of power at highway speeds, Check engine light with lean codes

Fix: In-line fuel filter clogs from tank sediment, especially if tank has never been dropped. Filter replacement is 1 hour, but often reveals failing fuel pump or rusted fuel lines. Tank drops are common on high-mileage examples for pump replacement (add 3-4 hours labor). Always replace filter when doing pump.

Estimated cost: $150-900

Symptoms: Driver seat back suddenly reclines without input, Recliner handle breaks off or spins freely, Seat back won't stay in upright position, Grinding or clicking when adjusting seat back angle

Fix: Subject to recall but many were never completed. Recliner pawl wears or spring breaks. Requires seat removal and recliner mechanism replacement. Junkyard parts are often equally worn. Aftermarket kits available. 2-3 hours labor for R&R and mechanism swap.

Estimated cost: $300-550