1993 Porsche 911 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1993 Porsche 911
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1993 Porsche 911 ProblemsCheck Engine Light due to faulty oxygen sensor
Check Engine Light illumination and performance issues can be caused by oxygen sensor faults.
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 cover, chain housings, case through bolts, and lines to/from the oil cooler.