Power steering only works on high revs - Lancer Evolution Mitsubishi Cars & Trucks

Yes you need to add more fluid or replace it might be going out

Without a high pressure gauge cant test however it sounds like pump is warn rack will either leak or bind internally

you don`t say how high the rpms increase. there is a power steering pressure switch that bumps up idle when the steering wheel turns so the car won`t stall. depending on how much pressure is created determines how much to increase the rpms.

Hi Sherman

You have to do this test to find out why the steering is heavy.
after you check the steering fluid level and top it up if needed.
start the engine let it IDLE try to turn steering and feel how hard or soft is.
Now rev the engine up to 2500 rpm and keep holding the rev. test the steering while you still holdind the rev.
if you feel no difference, the problem is the steering rack it self.
if the steering get softer while you rev up, the problem is the power steering pump.
Good Luck

steering pump oil or fan belt

If the belt and fluid levels are correct there is a good chance it may be a bigger problem. The power steering pump may be the fault. At lower speeds a worn pump isn't turning fast enough to push enough fluid. When you REV the engine your speeding up the pump pushing more fluid. Get the pump checked. If that's ok your possibly looking at a problem with the rack itself. ($$$ Ouch!).

I would look elsewhere in the hydraulic power steering system for where the metal flakes originated.

no try brining the revs up a bit the load is to high for the pump if the revs come up the pressure comes up to it will make it easier to turn hope this helps

Hi Ya
Have you checked the Steering pump belt
i.e is it tight enough Or Old and slipping in the groove of the pump pulley

there may have been air trapped in the power steering system. Keep a close eye on the system & your oil. Make sure your not leaking (wrong filter etc.)