Engine Controls - Tests W/O Codes - Gasoline: Introduction

Before diagnosing symptoms or intermittent faults, perform BASIC DIAGNOSTIC PROCEDURES in the BASIC TESTING - GASOLINE article and DIAGNOSTIC TESTS in the appropriate G - TEST W/CODES article.

TESTS W/CODES - 2.5L - Caravan, Dakota, Voyager

TESTS W/CODES - 3.0L - Caravan, Voyager

TESTS W/CODES - 3.3L - Caravan, Town & Country, Voyager

TESTS W/CODES - 3.9L - Dakota, Pickup, Ramcharger, RWD Van

TESTS W/CODES - V8 - Dakota, Pickup, Ramcharger, RWD Van

Use this article to diagnose driveability problems that exist when a hard fault code is not present.

NOTE: Some driveability problems may have been corrected by manufacturer with a revised computer control unit. Check with manufacturer for latest computer application.

Symptom checks can direct the technician to malfunctioning component(s) for further diagnosis. A symptom should lead to a specific component, system test or an adjustment.

Use intermittent test procedures to locate driveability problems that DO NOT occur when the vehicle is tested. Also use these test procedures if a soft (intermittent) trouble code was present, but no problem is found during self-diagnostic testing.

NOTE: For specific testing procedures, see the SYSTEM/COMPONENT TESTS - GASOLINE article. For specifications, see ADJUSTMENTS - GASOLINE or SPECIFICATIONS - GASOLINE article.