Conditions for Running

WARNING: This page is about a different car, the 2004 Chevrolet Monte Carlo and 2004 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.

The engine has been running longer than 10 minutes.
The engine load must be stable.
The idle air control (IAC) position parameter does not change more than 5 counts.
The throttle position (TP) is below 1.5 percent.
The short term FT is between -20 and +20 percent.
The transaxle is in drive for automatic transaxles, or in neutral for manual transaxles with the clutch pedal depressed.
The barometric pressure is more than 74 kPa.
The engine coolant temperature (ECT) is between 75-126°C (167-258.8°F).
The engine is in Closed Loop fuel control.
The battery voltage is more than 10.7 volts.
The intake air temperature (IAT) is between -20 and +100°C (-4 and +212°F).
The difference between the engine speed and the desired engine speed is less than 200 RPM.
The mass air flow (MAF) is between 3-10 grams per second.