1971 PLYMOUTH SATELLITE

Typical onset: 80,000-150,000 mi

Symptoms: Rattling on cold starts that quiets when warm, Rough idle or hard starting when hot, Erratic timing readings that won't stay set, Loss of power especially on acceleration

Fix: Replace timing chain, gears, and tensioner with quality double-roller set. On V8s, expect 4-6 hours labor depending on accessories and A/C. I6 225 Slant Six is slightly easier at 3-4 hours. Critical to check cam/crank gear wear and replace if stepped.

Estimated cost: $400-900

Symptoms: Uneven ride height side-to-side, Clunking from front suspension over bumps, Visible rust scaling around lower control arm mounts, Front end sag that doesn't correct with torsion bar adjustment

Fix: Northern and rust-belt cars frequently have compromised frame rails where torsion bars anchor. Inspect thoroughly before purchase. Repair requires frame section replacement or reinforcement plating—8-12 hours minimum, often needs professional frame shop. Some cars aren't economically savable.

Estimated cost: $1,200-3,500

Symptoms: Raw fuel smell in cabin or engine bay, Rough idle with vacuum leaks, Fuel staining or varnish buildup under carburetor, Hard starting after heat soak

Fix: The factory cast iron intakes warp from heat cycles, especially on 383/440 engines. Carb base gaskets leak, and intake-to-head gaskets fail. Proper fix requires manifold milling (check for straightness) or replacement, then fresh gaskets all around—4-5 hours labor. Just replacing gaskets without addressing warpage is temporary.

Estimated cost: $350-800

Symptoms: Fuel gauge erratic or stuck on empty/full, Rust particles clogging fuel filter repeatedly, Fuel leaking from tank seams or filler neck, Engine stumbling from sediment in fuel system

Fix: Original steel tanks rust from inside out after decades, especially if car sat. Sender units corrode and fail. Replace tank, sender, and all rubber fuel lines as a system—3-4 hours labor. Budget for new fuel pump and filter too. Don't patch old tanks on these; they leak again quickly.

Estimated cost: $500-950

Symptoms: Intermittent no-start or dead electrical system, Gauges cutting in and out, Melted or burned smell at firewall connector, Headlights dimming with accessory load

Fix: The firewall bulkhead connector corrodes and develops high resistance, causing voltage drops and overheating. Mopar-specific issue. Proper fix involves disassembly, cleaning all terminals, dielectric grease, and often bypassing high-amp circuits with relays—2-3 hours for experienced tech. Some opt for complete rewire.

Estimated cost: $200-600

Typical onset: 60,000-120,000 mi

Symptoms: Gear oil dripping from front of differential, Oil coating inside of driveshaft, Whining noise from rear end under load

Fix: Pinion seals harden and leak with age. Replace seal, check pinion bearing preload, and inspect companion flange for groove wear that causes repeat leaks—2 hours labor. If flange is grooved, it needs replacement or repair sleeve. Set preload correctly or you'll chase bearing noise later.

Estimated cost: $180-400

Symptoms: Sweet coolant smell in cabin, Wet passenger-side carpet, Fogged windshield that won't clear, Coolant loss with no external leaks

Fix: Original heater cores corrode through. On '71 Satellites, dash removal isn't required but heater box disassembly is tight work—4-5 hours labor. Flush system thoroughly after replacement to clear glycol residue. Use brass/copper replacement cores; aluminum units don't last in these older systems.

Estimated cost: $350-650