Your Vehicle: 2001 Ford Escort ZX2 L4-2.0L DOHC VIN 3
Vehicle » Powertrain Management » Emission Control Systems » Air Injection Pump » Description and Operation  
  Description and Operation  


Electric Air Pump

The electric AIR pump (Figure 121) provides pressurized air to the Secondary Air Injection system. The electric AIR pump functions independently of rpm and is controlled by the PCM. The electric AIR pump is only used for short periods of time. Delivery of air is dependent on the amount of system backpressure and system voltage. The inlet system of the AIR pump incorporates a non-serviceable filter and splash cap which helps to guard against dirt and water.