Symptoms of intake air preheating malfunctions (Fiesta 4)

Malfunctions of the intake air preheater most often manifest themselves in a decrease in engine power and an increase in fuel consumption. An improperly or improperly installed preheater hose can lead to the same symptoms.

In the cold season

After starting a cold engine, unstable idling is observed during the engine warm-up stage.

Unstable transitions when measuring engine operating modes, the engine operates intermittently.

In the warm season

Reduced engine power, maximum vehicle speed is achieved with difficulty.

Increased fuel consumption.