Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Engine Controls - Tests W/O Codes - Gasoline: Introduction
Before diagnosing symptoms or intermittent faults, perform steps in appropriate BASIC TESTING and TESTS W/CODES (if applicable) articles below in the ENGINE PERFORMANCE section. Use this article to diagnose driveability problems that exist when a fault code is not present.
- BASIC TESTING - 2.5L (for Caravan & Voyager)
- BASIC TESTING - 3.0L (for Caravan & Voyager)
- BASIC TESTING - 3.3L GASOLINE (for Caravan & Voyager)
- BASIC TESTING - 3.8L (for all models)
- TESTS W/CODES - 2.5L (for Caravan & Voyager)
- TESTS W/CODES - 3.0L (for Caravan & Voyager)
- TESTS W/CODES - 3.3L GASOLINE (for Caravan & Voyager)
- TESTS W/CODES - 3.8L (for all models)
Symptom checks can direct the technician to malfunctioning component(s) for further diagnosis. A symptom should lead to a specific component test, system test or adjustment specification.
Use intermittent test procedures to locate driveability problems that do not occur while the vehicle is being tested. These problems may noticeably affect driveability or cause Malfunction Indicator Light (MIL) to glow. Also use these test procedures if a soft (intermittent) trouble code was present but no problem is found during self-diagnostic testing.
- ADJUSTMENTS - 2.5L (for Caravan & Voyager)
- ADJUSTMENTS - 3.0L (for Caravan & Voyager)
- ADJUSTMENTS - 3.3L GASOLINE (for Caravan & Voyager)
- ADJUSTMENTS - 3.8L (for all models)
- SPECIFICATIONS - 2.5L (for Caravan & Voyager)
- SPECIFICATIONS - 3.0L (for Caravan & Voyager)
- SPECIFICATIONS - 3.3L GASOLINE (for Caravan & Voyager)
- SPECIFICATIONS - 3.8L (for all models)
- SYSTEM/COMPONENT TESTS - 2.5L (for Caravan & Voyager)
- SYSTEM/COMPONENT TESTS - 3.0L (for Caravan & Voyager)
- SYSTEM/COMPONENT TESTS - 3.3L GASOLINE (for Caravan & Voyager)
- SYSTEM/COMPONENT TESTS - 3.8L (for all models)
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.