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, 2.5 K, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROLS - ADJUSTMENTSIDLE SPEED & MIXTUREV6 IDLE SPEEDMINIMUM AIRFLOW RATE (3.0L)
1994 Plymouth Sundance Duster, 2D Hatchback, 2.5 K, Automatic
Minimum Airflow Rate (3.0L)
1994 Plymouth Sundance Duster, 2D Hatchback, 2.5 K, AutomaticSECTION Minimum Airflow Rate (3.0L)
- Ensure engine is at operating temperature. Turn off all lights and accessories. Connect timing light and tachometer to engine. Disconnect engine coolant temperature sensor. Ensure ignition timing is to specification. See V6 IGNITION TIMING under IGNITION TIMING. Turn engine off, and reconnect coolant temperature sensor.
- With engine off, disconnect hose from PCV valve, and plug PCV valve nipple. Disconnect idle purge hose from vacuum nipple at throttle body. See Fig 1 . Attach Air Metering Fitting (6457) to manifold-mounted idle purge hose. Orifice size is .125" (3 mm). Connect Diagnostic Readout Box (DRB) to vehicle.
- Start engine and allow it to idle for at least one minute. Using DRB, access MINIMUM AIRFLOW IDLE SPEED. The Idle Speed Control (ISC) motor should fully close, and idle spark advance should be fixed. Ensure proper RPM is displayed on DRB.
- Check idle RPM (minimum airflow rate) with tachometer. See V6 MINIMUM AIRFLOW RATE SPECIFICATIONS table. If minimum airflow rate is not to specification, replace throttle body. If minimum airflow rate is correct, turn engine off, and disconnect all test equipment.
V6 MINIMUM AIRFLOW RATE SPECIFICATIONS
| Application | RPM |
|---|---|
| 3.0L | 610-910 |
| 3.3L | 600-840 |
| 3.5L | 750-1100 |
RENDER: 1.0x
NO RELATED
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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.