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Chevrolet
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1998
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Venture Base, Van Passenger
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System - Tests W/O Codes
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Symptoms
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Engine Will Not Idle
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Possible Causes & Corrections:
Possible Causes & Corrections:
Problem is most likely in Idle Air Control (IAC) system.
Check EGR system.
Check park/neutral switch.
Disconnect MAP sensor. If condition is corrected, replace sensor.