EGR Valve
Secondary Air Pump
Thermostat Housing
Oil Cooler
Fuel Pressure Regulator
Blower Resistor
Heater Valve
Ignition Coil
Air Flow Sensor
Headlight Leveling Sensor
Lambda Sensor
Temperature Sensor
ABS sensor
Brake Light Switch
Oil Pressure Switch
Throttle Body
Auxiliary Water Pump

Fuel Pressure Regulator

What They Do
Meter and atomize fuel delivered to engine. Electrical control signal from the computer activates the solenoid causing the valve to move off its seat, allowing fuel to flow in a conical spray pattern. Injector flow orifice is fixed and fuel pressure is constant. Fuel flow is controlled by how long the solenoid is energized.

Failure Symptoms
No start, flooding, hesitations, exhaust odor.
Inspect every 25,000 miles for proper spray pattern and evidence of leakage.