1991 Guides

1991 Toyota Celica stalling or no-start? Learn how the engine control module works, where it’s located, replacement labor times, and how a pre-programmed unit can save time and hassle.

ToyotaUpdated Aug 25, 2026

1991 Toyota 4Runner stalling or no-start? Learn how the engine control module works, where it’s located, and why a VIN-programmed replacement may resolve your drivability issues quickly.

ToyotaUpdated Aug 25, 2026

If your 1991 Toyota Camry 2.0L has no-start or stalling, the ECM may need replacement. Learn location, labor times, and post-install relearn procedure.

ToyotaUpdated Aug 25, 2026

Learn about PCM replacement in the 1991 Pontiac Trans Sport and avoid engine misfires, poor acceleration, and shutdowns.

PontiacUpdated Aug 25, 2026

If your 1991 Pontiac Sunbird shows no‑start or erratic shifting, beware of ECM/PCM failure. Learn causes, repair steps, and outcomes.

PontiacUpdated Aug 25, 2026

1991 Pontiac Le Mans stalling, no-start, or erratic engine behavior may signal ECM failure. Learn symptoms, replacement steps, and why a pre-programmed unit saves time and hassle.

PontiacUpdated Aug 25, 2026

Symptoms of a failing ECM in a 1991 Pontiac Grand Prix 2.3L, location under the dash, and how a pre-programmed unit avoids the 0.5-hour relearn procedure.

PontiacUpdated Aug 25, 2026

Engine computer failure in your 1991 Pontiac Grand Am? This guide covers ECM replacement, PCM relearn procedures, and repair options for pre-OBD-II diagnostics.

PontiacUpdated Aug 25, 2026

1991 Pontiac Bonneville with stalling, no-start, or erratic engine behavior may need ECM replacement. Learn location, labor time, and how to avoid module damage during service.

PontiacUpdated Aug 25, 2026

1991 Pontiac 6000 ECM failure symptoms and replacement options. Pre-OBD-II vehicle requires PROM programming for proper operation.

PontiacUpdated Aug 25, 2026