Town & Country LWB FWD V6-3.8L VIN L (1999)
Idle Speed: Testing and Inspection
1. Warm engine in Park or Neutral until the cooling fan has cycled on and off at least once.
2. Ensure that all accessories are off.
3. Shut off engine.
PCV Valve
4. Disconnect the PCV valve hose from the intake manifold nipple.
5. Cap the PCV valve nipple.
6.
Air Metering Fitting 6457
a. Install Air Metering Fitting 6457 (0.125 in. orifice) to the intake manifold PCV nipple.
b. Disconnect the idle purge line from the throttle body nipple.
7.
a. Cap the 3116 inch nipple.
b. Connect the DRB scan tool to the data link connector.
8. Restart the engine. Allow engine to idle until the cooling fan has cycled on and off at least one 180°F cycle.
9. Using the DRB scan tool, access the Minimum Airflow Idle Speed screen.
10. The following will then occur:
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Idle air control motor will fully close.
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Idle spark advance will become fixed.
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DRB scan tool displays engine rpm.
11. If idle rpm is within the range shown in the Idle Specification chart, throttle body minimum air-flow is set correctly.
IDLE SPECIFICATION
Odometer Reading = Idle RPM
Below 1000 Miles = 525-875 RPM
Above 1000 Miles = 575-875 RPM
12. If idle rpm is not within specifications, shut off the engine and clean the throttle body as follows:
a. Remove the throttle body from engine.
WARNING: CLEAN THROTTLE BODY IN A WELL VENTILATED AREA. WEAR RUBBER OR BUTYL GLOVES, DO NOT
LET MOPAR PARTS CLEANER COME IN CONTACT WITH EYES OR SKIN. AVOID INGESTING THE CLEANER. WASH
THOROUGHLY AFTER USING CLEANER.