What does Evo mean on a power steering pump?
What does Evo mean on a power steering pump?
E.V.O. stands for Electronically Variable Orifice. This component is controlled by an electronic control module that reduces fluid pressure from the power steering pump to the steering gear at highway speeds. Improved high speed handling and road feel is the result.
Can a malfunction of the Evo valve cause loss of power steering?
A properly functioning system requires proper operation of the EVO valve (see below), control module and vehicle speed sensor. A malfunction in the EVO valve can result in loss of regulated assist or even complete loss of power assist. However, this problem often is mistakenly perceived to be a defective power steering pump or steering gear.
How does variable assisted power steering ( Evo ) work?
While vehicle manufacturer terminology may differ, a typical system works like this: At speeds below 40 MPH, the Electronic Variable Orifice valve (EVO) is completely open, allowing full hydraulic flow from the power steering pump through the steering unit for maximum power assist. Above that speed, a control module commands the EVO to partially
What does the Evo valve do in a car?
The EVO valve is a key component in variable assist systems. While vehicle manufacturer terminology may differ, a typical system works like this: At speeds below 40 MPH, the Electronic Variable Orifice valve (EVO) is completely open, allowing full hydraulic flow from the power steering pump through the steering unit for maximum power assist.
What is the Evo number on a Cardone power steering pump?
Refer to the vehicle manufacturers’ service manual for specific test procedures prior to changing any power system component. CARDONE Power Steering Pump numbers ending with “V1” or “V2” (i.e. 20-8747V1) are supplied with the EVO valve. Rack and Pinions ending with “E” are supplied with rack- mounted EVO valve.
A properly functioning system requires proper operation of the EVO valve (see below), control module and vehicle speed sensor. A malfunction in the EVO valve can result in loss of regulated assist or even complete loss of power assist. However, this problem often is mistakenly perceived to be a defective power steering pump or steering gear.
What does Evo stand for in power steering?
This control system is called an Electronic Variable Orifice (EVO). The EVO valve is mounted at the power steering pump outlet. The valve uses an electronic controller to produce magnetic field changes in the valve’s solenoid coil.
The EVO valve is a key component in variable assist systems. While vehicle manufacturer terminology may differ, a typical system works like this: At speeds below 40 MPH, the Electronic Variable Orifice valve (EVO) is completely open, allowing full hydraulic flow from the power steering pump through the steering unit for maximum power assist.
Refer to the vehicle manufacturers’ service manual for specific test procedures prior to changing any power system component. CARDONE Power Steering Pump numbers ending with “V1” or “V2” (i.e. 20-8747V1) are supplied with the EVO valve. Rack and Pinions ending with “E” are supplied with rack- mounted EVO valve.
