The starter is located at the rear of the engine, low, and in front of where the transmission and engine mate.
Have a pro fix it, starting with a diagnosis.
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https://repairpal.com/nissan-repair-in-covington-kentucky
RepairPal Certified shops can diagnose and repair your 1992 Nissan D21. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.