1970 AMC REBEL

Typical onset: 70,000-110,000 mi

Symptoms: Slipping between gears, especially 2nd to 3rd, Delayed engagement when shifting into drive, Fluid leaking from rear seal or cooler lines, Harsh or banging shifts under load

Fix: Full rebuild required in most cases — 12-16 hours labor. Transmission mounts fail early and accelerate internal wear if ignored. Cooler lines corrode and starve the trans of fluid. Rebuild includes new clutch packs, bands, seals, and torque converter inspection.

Estimated cost: $1,800-3,200

Typical onset: 100,000-150,000 mi

Symptoms: Heavy knocking from bottom end at idle, Oil pressure drops below 10 psi at hot idle, Metal shavings in oil filter, Vibration increases with RPM

Fix: Engine must come out for crank inspection and main bearing replacement — 18-24 hours total. Often discover crank needs machining or replacement. If journals are scored, you're looking at full rebuild territory. AMC cranks weren't hardened like competitors.

Estimated cost: $2,500-4,800

Typical onset: 80,000-130,000 mi

Symptoms: Blue smoke on startup that clears after warmup, Excessive oil consumption (1 qt per 500-800 miles), Loss of compression across multiple cylinders, Blow-by visible from oil filler cap

Fix: Ring job requires pulling heads and pistons — 14-18 hours if cylinders don't need boring. AMC blocks were soft and often need 0.030" overbore by this mileage. Budget for machine work and new pistons if wear is uneven. Many techs just recommend a long block swap at this point.

Estimated cost: $2,200-4,000

Typical onset: 60,000-90,000 mi

Symptoms: Transmission fluid dripping near radiator, Pink fluid in coolant overflow, Transmission overheating in traffic or towing, Steel lines rusted through at bends

Fix: Replace both cooler lines and often the cooler itself if cross-contamination occurred — 3-5 hours. If coolant mixed with ATF, transmission flush mandatory and internal damage likely. The factory routing exposed lines to road salt and they rot from the outside in.

Estimated cost: $350-750

Symptoms: Engine dies in hot weather after driving, won't restart for 20-30 minutes, Rough idle and hesitation when fuel tank below 1/4, Stalling when coming to stops after highway driving, Hard starting when engine is hot

Fix: Fuel filter location near exhaust causes heat soak — relocate filter and add heat shield or insulated line. Replace mechanical fuel pump if diaphragm is weak. 2-3 hours for filter relocation and pump replacement. Old tanks rust internally and clog filters repeatedly.

Estimated cost: $200-450

Symptoms: Visible holes in driver/passenger floor pans, Rust perforation around rear spring mounts, Soft or crumbling metal at rear torque box, Surface rust on frame rails turning to structural damage

Fix: Rust repair is extensive — 20-40 hours depending on severity. Floor pans need cutting and welding, frame rails may need plating or replacement sections. This is a snow-belt epidemic on these cars. Not a DIY job unless you're a competent welder.

Estimated cost: $2,000-6,000