Product & Technical
Why use EHPS pumps over the traditional belt driven power steering pumps?
Automobile manufacturers are favoring EHPS pumps because they result in better performance and fuel economy. EHPS pumps eliminate the belt and pulley rotational mass that a traditional pump would require.
What does an EHPS pump consist of?
An EHPS pump consists of an electronic motor and a hydraulic pump. The electronic motor generates the required RPMs for the pump to produce flow and pressure to supply the power steering system.
Can an EHPS pump be serviced?
Most automobile manufactures do not recommend servicing individual components of an EHPS pump. These pumps are replaced as complete units.
Can regular power steering fluid be used for EHPS systems?
No. You must use the correct fluid specified in the O.E. service manual or owner’s manual of the vehicle being serviced.
What is needed for an EHPS pump to function?
Unlike traditional power steering pumps, the EHPS pumps require a 12-volt power supply. Most EHPS pumps will also require communication with an external module.
Where is an EHPS pump usually located?
An EHPS pump has a different appearance than a traditional power steering pump and is usually mounted on the passenger side behind the front bumper.
Will the system need to be bled after replacing an EHPS pump?
Yes, a bleeding procedure must be performed, just like a traditional belt-driven power steering system.
Will the power steering fluid need to be flushed?
Yes. The hydraulic system must be flushed according to the O.E. service intervals. Failure do to so can cause premature damage to the EHPS pump and other power steering components.