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Home >> Chevrolet >> 1985 >> Nova CL, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Feedback Carburetor System >> Servicing >> Deceleration Fuel Cut System >> System Check

System Check

CAUTION: Perform this check quickly to avoid overheating catalytic converter.
  1. Connect tachometer to engine. Start engine and check that is runs normally. Disconnect throttle position switch connector. See Fig 1.
    Fig 1: Throttle Position Switch Connector
    G5003
  2. Gradually increase engine speed to 2300 RPM and check that engine is fluctuating. Reconnect throttle position switch connector. Gradually increase engine speed to 2300 RPM and check that engine operation returns to normal.
  3. If no problem is found with this check, system is okay; otherwise inspect each part.
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