1991 Porsche 911 Turbo Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1991 Porsche 911 Turbo

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1991 Porsche 911 Turbo Problems

ABS Light On Due to Moisture and Corrosion

The accumulation of moisture at major connectors and control units can cause various ABS/PDAS faults due to corrosion.

Check Engine Light Due to Faulty Oxygen Sensor

Check Engine Light illumination and performance issues can be caused by oxygen sensor faults.

Engine Oil Leaks

Over time, the engine can leak oil at various locations. Early-production vehicles require engine disassembly and modification to resolve leaks at the cylinder heads, oil return tubes, valve covers, timing covers, chain housings, case through bolts, and lines to/from the oil cooler.

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