1991 Guides
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1991 Lexus LS400 Engine Control Module and PCM Replacement Guide
Experiencing no-start or stalling issues in your 1991 Lexus LS400? A faulty engine control module may be the cause. Learn about replacement and programming.
Lexus
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1991 Jeep Wrangler 2.5L Engine Control Module Replacement Guide
Experiencing no-start or stalling issues in your 1991 Jeep Wrangler? A faulty engine control module may be the cause. Learn about replacement and programming.
Jeep
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1991 Jeep Comanche PCM Engine Control Module Replacement Guide
When your 1991 Jeep Comanche stalls, refuses to start, or runs poorly, a failing engine computer may be the cause. Learn symptoms and replacement options.
Jeep
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1991 Acura NSX PCM Repair Guide
If your 1991 Acura NSX won't start or misfires, a faulty PCM may be the cause. Learn how a quick check of ECU grounds can diagnose the issue.
Acura
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1991 Plymouth Laser ECM/PCM Repair & Replacement Guide
Is your 1991 Plymouth Laser having starting issues, stalling, or rough running? Learn about the engine computer ECM, replacement options, and how to diagnose common failures in this 1.8L model.
Plymouth
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1991 Toyota Supra Engine Computer: Replacement and Relearn Guide
1991 Toyota Supra stalling or no-start? Learn symptoms, location, and replacement steps for the engine control module, plus prevention tips to avoid failure.
Toyota
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1991 Toyota Previa ECM Replacement & Common Failure Signs
1991 Toyota Previa stalling or no-start? Learn ECM failure symptoms, replacement steps, and why a VIN-programmed unit saves time on this pre-OBD-II van.
Toyota
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1991 Toyota MR2 ECM Replacement: Costs, Codes, and Installation
1991 Toyota MR2 ECM/PCM repair guide covers common failure symptoms, location in the engine compartment, and replacement options for the 2.0L model
Toyota
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1991 Toyota Land Cruiser ECM and PCM Replacement Complete Guide
If your 1991 Toyota Land Cruiser has no-start, stalling, or dead scan tool communication, the ECM may need replacement. Caution: pre-OBD-II, no P-codes. A programmed unit restores drivability.
Toyota
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1991 Toyota Corolla ECM Replacement & Relearn Guide
1991 Toyota Corolla stalling or no-start? Learn ECM failure symptoms, replacement steps, and why a pre-programmed unit saves time and avoids relearn hassles.
Toyota