1965 DODGE CORONET

Typical onset: 60,000-100,000 mi (original chain) or whenever 50+ years old

Symptoms: hard starting when hot, erratic idle and timing that won't stay adjusted, rattling noise from front of engine on cold start, backfiring through carburetor

Fix: Replace timing chain, gears, and tensioner. On small-blocks (273/318), chain access requires front cover removal, water pump off, harmonic balancer puller, and timing pointer realignment. Budget 4-6 hours labor for straightforward replacement, more if you find worn cam gear or need to degree the cam.

Estimated cost: $400-800

Symptoms: sagging front end that won't adjust back to ride height, clunking over bumps from loose anchor, stripped hex sockets in crossmember, uneven ride height side-to-side

Fix: Torsion bar anchors rust into the crossmember or the hex pockets strip out. If the crossmember is rotted, you're welding in patch panels or replacing the whole K-member. If just the adjusting bolts are seized, plan on cutting and re-tapping or helicoil inserts. Budget 3-5 hours per side if crossmember surgery is needed.

Estimated cost: $300-1,200

Symptoms: brake pedal slowly sinks to floor when held, complete loss of brakes if one circuit fails, fluid leaking from rear of master cylinder into booster or firewall area

Fix: These came with single-reservoir masters — when the seals go, you lose everything. Rebuild kits exist but most shops swap to a dual-reservoir master from a later Mopar (requires minor plumbing and possibly pedal bracket mods). Bench-bleed, install, bleed system. 2-4 hours labor.

Estimated cost: $250-500

Typical onset: 80,000+ mi or age-related

Symptoms: excessive play at the wheel (more than 2 inches before wheels respond), clunking when changing direction, wandering on highway, groaning noises when turning at low speed

Fix: Manual steering boxes wear in the sector shaft and worm gear. Adjustment procedures can tighten it up temporarily, but worn boxes need rebuilding or replacement. Factory-style rebuilds run 4-6 hours including removal, R&R of pitman arm (pickle fork or puller required), and alignment check afterward.

Estimated cost: $400-900

Symptoms: fuel gauge erratic or always reads empty/full, rust particles clogging fuel filter repeatedly, fuel smell from trunk area, visible external rust or pinholes in tank

Fix: Steel tanks rust from inside out, especially if the car sat. Sending units corrode and the float arms bind. Drop the tank (2-3 hours), inspect inside with a flashlight. If salvageable, send out for cleaning and sealing or replace with repo unit. New sending units available. Total job 4-6 hours.

Estimated cost: $350-750

Symptoms: fuel dripping from carb vents or airhorn, black smoke on deceleration, hard starting when hot, easy when cold, strong gas smell in cabin after shutdown, fuel in intake manifold causing hydro-lock risk

Fix: Ethanol fuel eats old rubber and cork gaskets, and needle/seat assemblies wear or get debris-jammed. Rebuild kit plus ultrasonic cleaning of castings, new gaskets, careful float level setting. Budget 3-4 hours for a proper rebuild including manifold clean-up if fuel leaked past the gasket.

Estimated cost: $250-500

Symptoms: visible holes in floor under carpet or trunk mat, water pooling inside after rain, exhaust fumes in cabin, failed inspection in rust-belt states

Fix: These are unibody cars and the floors rust, especially around the rocker panels, rear torque box area, and trunk drop-offs. Patch panels are available; expect 8-15 hours of cutting, welding, and seam-sealing per side for serious rust. Surface rust is cheap; structural rot is expensive.

Estimated cost: $800-3,000