Minimum Airflow Rate (3.0L)
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 1994 Plymouth Sundance, 1994 Plymouth Acclaim, 1994 Eagle Vision, 1994 Dodge Spirit, and 1994 Dodge Shadow. However, it is still accessible from the selected car via links, so may be relevant.
- 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 |