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 BASE, 2D HATCHBACK, 2.2 D, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - TESTS W/CODES - 3.0LDIAGNOSTIC CHARTSTEST NTC-13A - CHECKING MINIMUM IDLE AIRFLOW
1994 Plymouth Sundance Base, 2D Hatchback, 2.2 D, Automatic
Test NTC-13A - Checking Minimum Idle Airflow
1994 Plymouth Sundance Base, 2D Hatchback, 2.2 D, AutomaticSECTION Test NTC-13A - Checking Minimum Idle Airflow
- Turn ignition off. Disconnect PCV valve hose from PCV valve. Plug PCV hose end. Disconnect idle purge hose from engine vacuum harness "T". Install Vacuum Fitting (6457) to intake manifold idle purge hose. Start engine. Allow engine to reach normal operating temperature.
- If vehicle has less than 1000 miles on odometer, go to next step. If vehicle has more than 1000 miles on odometer, using DRB, actuate minimum airflow. Engine speed should be 560-950 RPM. If engine speed is within specification, minimum airflow is normal. Test is complete. If engine speed is not within specification, go to step 4).
- Using DRB, actuate minimum airflow. Engine speed should be 610-950 RPM. If engine speed is within specification, minimum airflow is normal. Test is complete. If engine speed is not within specification, go to next step.
- Turn ignition off. Remove throttle body from engine. Clean throttle body bore and throttle blade. Install throttle body on engine. Go to step 1) and repeat minimum idle airflow test. After cleaning throttle body bore and throttle blade, minimum idle speed is not within specification, problem is not caused by throttle body. Go to TEST NTC-14A.
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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.