LEMON Manuals: Even more car manuals for everyone
Home >> Pontiac >> 2005 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Engine Control System 3.8L (Introduction)) >> Description and Operation >> Fuel System Description >> Deceleration Mode

Deceleration Mode

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.

When the driver releases the accelerator pedal, air flow into the engine is reduced. The PCM monitors the corresponding changes in TP, MAP, and MAF. The PCM shuts OFF fuel completely if the deceleration is very rapid, or for long periods, such as long, closed-throttle coast-down. The fuel shuts OFF in order to prevent damage to the catalytic converters.

scientia non olet · About LEMON Manuals