Section 11 (Engine Controls - Basic Testing): Introduction
WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 1991 Plymouth Colt Vista, 1991 Plymouth Colt, 1991 Mitsubishi Pickup, 1991 Mitsubishi Montero, and 1991 Mitsubishi Mirage. However, it is still accessible from the selected car via links, so may be relevant.
The following diagnostic steps will help prevent overlooking a simple problem. This is also where to begin diagnosis for a no start condition. First step in diagnosing any driveability problem is verifying customer's complaint with a test drive under conditions problem reportedly occurred.
Before entering self-diagnostics, perform a careful and complete visual inspection. Most engine control problems result from mechanical breakdowns, poor electrical connections or damaged/misrouted vacuum hoses. Before condemning computerized system, perform each test listed in article.