AE86 Corolla

1983-1987 / Coupe / Hatchback / Japan

All AE86 Corolla problems All workshop issues

Critical Cooling System

Radiator Failure

Symptoms

Coolant leak from the radiator (typically from the plastic end tanks or core joints). Overheating.

Cause

The factory radiator is an aluminium core with plastic end tanks, crimped together. After 40 years, the plastic becomes brittle and cracks, or the crimp seal fails. The aluminium core also corrodes internally.

Fix

Replace with an aftermarket aluminium radiator.

Full-aluminium radiators are available for $150-300 and are a worthwhile upgrade.

They cool better and last longer than the factory unit.

Cost mentioned in fix

$150-300

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Other known issues

Common Engine, 4A-GE 1.6L DOHC Inline-4

Oil Consumption

Blue smoke on overrun (deceleration after high RPM) or under hard acceleration. Oil level drops between services. Fouled spark plugs, particularly on cylinders 1 and 4.

Minor Engine, 4A-GE 1.6L DOHC Inline-4

Timing Belt Failure

The engine stops instantly. On the 4A-GE (interference engine), the pistons hit the valves, bending the valves and potentially cracking pistons and damaging the head.

Common Engine, 4A-GE 1.6L DOHC Inline-4

T-VIS Failure

Loss of top-end power. The engine feels flat above 4,500 rpm and doesn't pull strongly to the redline. No audible "click" from the T-VIS actuator around 4,200 rpm.

Minor Engine, 4A-GE 1.6L DOHC Inline-4

Distributor O-Ring Oil Leak

Oil leaking from the base of the distributor, running down the side of the engine. Oil contamination on the distributor cap and leads.

Common Gearbox, T50 5-Speed Manual

Synchro Wear (2nd and 3rd Gear)

Crunching or grinding when shifting into second or third gear, particularly on fast downshifts. The synchro ring can no longer match shaft speeds, and the gear teeth clash.

Common Gearbox, T50 5-Speed Manual

Gearbox Mount Failure

Excessive vibration through the gearstick, clunking during gear changes, and the gearstick feeling loose or imprecise.

View all 14 AE86 Corolla problems