Power steering problem

Which hose is comming off the high pressure or return line?

Hi:
That could be either the high pressure or return. How is it attached?

It sounds like a low pressure / return line. You may have a restriction in the cooler, try bypassing it with a short length of hose (P/S return line-not fuel hose) and see if it still does it. If so, the rack unit may have an internal problem (spool valve). If your vehicle is equipped with Speed Sensitive Steering, you will need to do a pressure test with a high pressure tester to see if there is an issue in the SSS system
Below is a brief description of the P/S system
Let me know if this helps.

Joe

Hi,

I noticed it has been a couple of days since you were contacted. I apologize for that. It's because you added on to an existing thread.

Regardless, is there anything that causes it to happen, or is it as soon as you start the vehicle? Also, is this the high pressure or return hose?

I suppose it's possible that there is a blockage in the system. If you're getting good flow on the return line, it's not a blockage.

In this case, I would isolate the cooler and flush it first separately to clean out any potential blockage. I've had luck with the cleaner. If you run it at idle, it should be okay to run a flush through it. I've used Sea Foam Transmission and Power Steering cleaner successfully. Remove the reservoir and clean it first, then add the cleaner to the system. Run it at idle and every so often turn the wheel slowly to circulate the cleaner.

If pressure is still too high, it's likely the flow control valve is bad. So, let me know if the flush doesn't help. For your reference, I attached a pic below showing the valve.

Take care,

Joe.

See pic below.