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Home >> Acura >> 2001 >> 3.2CL Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Air Induction Systems >> Fuel Injection Air (FIA) Control System >> MDX, 3.2CL, 3.2TL & 3.5RL

MDX, 3.2CL, 3.2TL & 3.5RL

NOTE: Engine coolant temperature must be less than 104 degrees.
  1. Start engine and let idle. Disconnect vacuum hose from intake air pipe. Connect vacuum gauge to intake air pipe. Increase and decrease RPM. Ensure vacuum reading changes as RPM changes. If vacuum reading does not change, check for misrouted, leaking, broken or clogged intake bypass system vacuum lines. If vacuum lines are okay, check for cracked or defective FIA control valve.
  2. Increase and hold RPM at 3,000 RPM with no load (transmission in park or neutral) until radiator fan comes on , then let idle. Increase and decrease RPM. Ensure vacuum reading does not change with RPM. If vacuum reading changes, check for misrouted, broken or clogged intake bypass system vacuum lines. If vacuum lines are okay, check for cracked or defective FIA control valve.
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