Torana (LJ-LX) / GTR / SLR / A9X

1972-1979 / Coupe / Sedan / Hatchback / Australia

Common Electrical

Alternator and Charging Issues

Battery goes flat, dim headlights, ammeter shows discharge.

The alternator's internal components (brushes, bearings, voltage regulator) wear over time. The external wiring and connections corrode.

Replace or recondition the alternator ($150-300). Clean all electrical connections and earth points.

Cost mentioned in fix

$150-300

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// More Torana (LJ-LX) / GTR / SLR / A9X problems

Intermittent electrical faults, instruments flicker, lights dim, engine runs erratically.

Oil pressure drops below 25 psi at idle when hot. Knocking from the bottom end under load.

Rough idle, uneven running, flat spots, poor throttle response. The engine feels rough and unbalanced.

Blue smoke on startup that clears within a minute. May also smoke briefly on deceleration.

Temperature gauge climbs in traffic or under sustained load. May push coolant out the overflow. Engine pings (detonation) under acceleration.

Hesitation off idle (the classic "Q-jet bog"), flooding, hard starting when hot, black smoke, fuel smell.