The inoperative air government sensor or valve on an van controls the slothful celerity of the Engine. It is further called an sluggish velocity bridle, automatic idle speed Engine and indolent rapidity government solenoid. The sensor or valve regulates a baby bypass succession to let air bypass the throttle, resulting in increased sluggish quickness. General symptoms of air dominion sensor problems are slothful speeds that are extremely high rise or extremely low, stalling or unstable.
Possible Malfunction Causes
Build trustworthy there are no loose connections and the grounding is in city. It is practicable that there is a vacuum leak in the engine and the valve is closed in an lick to lower the indolent hurry. An engine vacuum leak Testament cause the bypass solenoid on the air control sensor to be extended all the Exit. A short in the air control sensor, wiring or driver circuit will normally trigger the check engine light. Use an ohmmeter to determine if the air control sensor is bad.
Place the negative lead on the idle air control terminal and the positive lead on the VPWR terminal. The resistance should be between 7 and 13 ohms. Replace the idle air control sensor if the reading does not fall within that range.
Use an Ohmmeter to Perform a Check
Check the resistance between the terminals and the sensor with an ohmmeter. Leave the engine off and remove the wiring harness connector from the idle air control sensor.Replace the IAC Sensor
Remove the negative battery cable from the battery. Unplug the wiring harness connections from the idle air control sensor. Unscrew the two screws holding the sensor and remove it. Remove the old gasket. Clean off any old gasket remnants on the throttle body with a small wire brush. Install the new idle air control sensor with a new gasket. Tighten the screws down to 71 to 106 inch pounds. Attach the wiring harness connector to the new idle air control sensor. Reconnect the negative battery cable.
