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.

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HOMESERVICE MANUALSPLYMOUTH1994SUNDANCE DUSTER, 2D HATCHBACK, 3.0 3, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/O CODESINTRODUCTION

1994 Plymouth Sundance Duster, 2D Hatchback, 3.0 3, Automatic

Engine Controls - Tests W/O Codes: Introduction

1994 Plymouth Sundance Duster, 2D Hatchback, 3.0 3, AutomaticSECTION Introduction

Before diagnosing symptoms or intermittent faults, perform steps in appropriate BASIC TESTING and G - TESTS W/ CODES articles (listed below) in the ENGINE PERFORMANCE section. Use this article to diagnose driveability problems existing when a hard fault code is not present.

NOTE: Some driveability problems may have been corrected by manufacturer with a revised Powertrain Control Module (PCM). Check with manufacturer for latest PCM application.

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

Use intermittent test procedures to locate driveability problems that do not occur when the vehicle is being tested. These problems may cause a noticeable driveability problem or cause the Malfunction Indicator Light (MIL) to illuminate on some vehicles. These test procedures should also be used if a soft (intermittent) trouble code was present, but no problem was found during self-diagnostic testing.

NOTE: For specific testing procedures, see appropriate G - TESTS W/ CODES article listed below in the ENGINE PERFORMANCE section. For specifications, see refer to ADJUSTMENTS article in the ENGINE PERFORMANCE section, or SPECIFICATIONS article in the ENGINE PERFORMANCE section.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.