OEM Chevrolet Express 3500 Idle Control Valve

Chevrolet Express 3500 Idle Control Valve Parts Questions & Experts Answers

• Idle Speed Control
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  Q: How to replace the Idle Control Valve on Chevrolet Express 3500?

  A: Beginning the replacement of an Idle Control Valve requires the disconnect of negative Battery Cable followed by removal of engine cover. First disconnect the Idle Control Valve harness connector then remove all its fastening screws. The proper replacement procedure includes a ban on either pushing or pulling on the Idle Control Valve pintle since this action can hurt worm drive threads and exposure to liquid cleaners or solvents should be prevented on the valve. First remove the Idle Control Valve assembly with its attached o-ring. Use carburetor cleaner and a parts cleaning brush to remove carbon dust from surfaces on the Idle Control Valve o-ring sealing area as well as from the pintle valve seat and air passage. These cleaning steps require avoidance of methyl ethyl ketone solutions. Heavy deposits within the air passage require removal of the Throttle Body for satisfactory cleaning procedures. The installing process for new idle control valves requires the use of identical parts because each application depends on specific pintle dimensions and shapes. The Idle Control Valve pintle should be checked for position a against the mounting flange; use just finger pressure to carefully retract the valve pintle if it exceeds 28 mm. Apply clean engine oil to the o-ring before attaching the Idle Control Valve assembly along with the fasteners and tighten them to 3 n.m (26 lb in). Place the Idle Control Valve harness connector after reinstalling the engine cover and negative cable battery connection along with reset of the Idle Control Valve pintle positioning.