Expedition 4WD V8-4.6L SOHC VIN W (1999)
Level Control Solenoid Valve: Description and Operation
Exhaust Solenoid (Level Control)
The Pressure Relief Valve (PRV) protects the rear air suspension components by venting the system to a specific pressure in the case of a system
malfunction. The system will decrease the pressure to an acceptable level to maintain vehicle height. In the normal operation mode with normal system
pressure, the PRV is constantly closed and does not have any effect on the system performance or fiction. The PRV is replaceable without any air
lines.
