Power Steering Pump Noise high RPM

[pokeyl]

I have changed the pump 3 years ago. Only when I am above 4K. Using the ATF+4 fluid.

It all works fine, just loud! Sound like a super-charger...

[SRT_BluByU]

Check fluid level..

[pokeyl]

Full, seems to be a lot of air in the fluid...

[V10Sidepipes]

Haven’t had to deal with it in the viper but in my other cars that usually meant it was on its way out… reman or new?

[pokeyl]

I don't remember. It's like pulling air into the system at RPM.

New is under $100. Same pump used on RAM 1500 and Jeep's

[johnnyk_6]

If you get a new Power Steering pump, you may have trouble finding new fittings for the lines. I had to order some aftermarket steel braided lines that came with a new set of fittings when I replaced my pump.

Edit: here are the lines I ordered. Side note, if you go with this option, make sure the braided steel lines are zip tied down and not rubbing against anything. The shop that installed these forgot to do so and the lines rubbed through my ECU cables causing the car to shut off at highway speed... not fun.

[Old School]

Sounds like maybe there was some contamination in the fluid that took out the 2nd pump. Maybe flush it a couple of times with the new pump.

[pokeyl]

I would need a new fan motor and Rack if it's all dirty? Again only at high RPM. if I stay below 3500 RPM zero noise. I have been working hydraulics for 40 years and it seem like the system is drawing in air on the suction feed to the pump. But then I should have a static leak and I don't.

Sounds like maybe there was some contamination in the fluid that took out the 2nd pump. Maybe flush it a couple of times with the new pump.

[SRT_BluByU]

Air in the system maybe?

[Old School]

I would need a new fan motor and Rack if it's all dirty?

I'd just flush it. The method I used on another vehicle was disconnect the return line at the pump and put it in a drain pan. Then, with the engine idling, continually fill the pump reservoir. Maybe with a friend turning the wheel back and forth. Pour a couple of gallons through, ATF is cheap enough.

[GTS Dean]

Does the fluid appear aerated after these high-rpm runs? Are you running an underdrive pump pulley to help slow things down and keep it from overworking? How about checking the low pressure side connections for suction leaks - including the bump tube o-ring at the rack.

[pokeyl]

You can see the air in it. No under drive.. I will do the flush.

Does the fluid appear aerated after these high-rpm runs? Are you running an underdrive pump pulley to help slow things down and keep it from overworking? How about checking the low pressure side connections for suction leaks - including the bump tube o-ring at the rack.