Index Chrysler Chrysler Town & Country/Voyager, Dodge Caravan, Plymouth Voyager - service repair manual 1992 year
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Engine idle set rpm should be tested and recorded as it is when the vehicle is first brought into shop Proceed to the Throttle Body Minimum Airflow pro- cedures. THROTTLE BODY MINIMUM AIR FLOW CHECK (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. manifold nipple. (5) Attach Air Metering Fitting #6457 (0.125 in. orifice) to the intake manifold PCV nipple (Fig. 5). (6) Disconnect the 3/16 inch idle purge line from the throttle body nipple (Fig. 6). Cap the 3/16 inch nipple. (7) Connect Diagnostic Readout Box II (DRB II). (8) Restart the engine. Allow engine to idle for at least one minute. (9) Using the DRBII, access Min. Airflow Idle Spd. • AIS motor will fully close. • Idle spark advance will become fixed. • Engine RPM will be displayed on DRB II. (11) If idle RPM is within the range shown in the Idle Specification chart, throttle body minimum air- (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 (b) While holding the throttle open, spray the entire throttle body bore and the manifold side of the (c) Using a soft scuff pad, clean the top and bottom of throttle body bore and the edges and manifold side (d) Use compressed air to dry the throttle body. flow is still not within specifications, the problem is intake manifold PCV nipple. Reinstall the PCV valve Fig. 4 Setting Spark Plug Gap—Typical Fig. 5 Air Metering Fitting #6457 IDLE SPECIFICATIONS . IGNITION SYSTEMS 8D - 37 |