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300ZX (Z32)

1989-2000 / Coupe / Convertible / Japan

All 300ZX (Z32) problems All workshop issues
Critical Twin-Turbo System (VG30DETT Only)

Power Steering Line Fire Risk

Symptoms

Power steering fluid leaks onto the hot exhaust manifold or turbo housing. In extreme cases, the fluid ignites.

Cause

The high-pressure power steering lines route near the exhaust on both sides of the engine. The rubber hose sections deteriorate from heat cycling, develop cracks, and begin to weep power steering fluid. The fluid contacts surfaces that can exceed 400 degrees Celsius.

Fix

Replace the power steering lines with aftermarket steel-braided lines ($200--500) or new rubber lines.

Inspect regularly.

Any visible power steering fluid near the exhaust requires immediate attention.

Cost mentioned in fix
$200

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// More 300ZX (Z32) problems

Other known issues

Common Twin-Turbo System (VG30DETT Only)

Vacuum Line Deterioration

Boost fluctuations, poor throttle response, check engine light, erratic idle, boost creep (boost exceeding target), or inability to make boost.
Critical Twin-Turbo System (VG30DETT Only)

Turbocharger Wear

Excessive turbo whine, metallic grinding or rattling from the turbos, blue smoke under boost (oil passing through worn seals), or reduced boost pressure.
Minor Engine -- VG30DE/DETT (All Models)

Timing Belt Failure Risk

If the timing belt breaks, the valves collide with the pistons. The engine is destroyed. There is no warning -- the belt simply snaps and the engine stops instantly with catastrophic internal damage.
Common Engine -- VG30DE/DETT (All Models)

Spark Plug Access (Rear Bank)

The rear three spark plugs become fouled, worn, or fail, causing misfires, rough running, and reduced power.
Critical Engine -- VG30DE/DETT (All Models)

Oil Leaks

Oil seepage and dripping from multiple points -- valve cover gaskets, rear main seal, oil pan gasket, timing cover, turbo oil lines (TT), power steering lines, and various sensors.
Minor Engine -- VG30DE/DETT (All Models)

Overheating

Temperature gauge climbs, particularly in traffic or on hot days. Coolant loss. Steam from under the bonnet.
View all 15 300ZX (Z32) problems