Hydroboost Issues As Usual

Hello everyone,

I'm here with a 97 Coyote swap and my Hydroboost is killing me, specifically the PS side.

Without too much detail, I got a different intake that required me to move the PS reservoir from my custom mount spot. I wanted to see how this intake ran before I made up a whole new bracket for the reservoir so I scrunched the reservoir down and went.

Car felt great. At some point the next day, my power steering and brakes were randomly leaving until they left all together.

I know a line from the reservoir could have pinched and sucked air into the system, but I never lost power assist when I was romping on it. I only noticed in the middle of a calmer highway drive the next day. I've bled these plenty of times and I know it should flow decently in the reservoir, but barely any movement. Rather sadly, I almost think I see some shiny bits in it.

Has anyone ever broken or roasted a PS pump shaft, or experienced some sort of bad air pocket? I've bled it to the point where no bubbles appear, but I may go back in with a Allen key on an impact and spin it, see if I can force bubbles out that way.

Any ideas would be great. If I had suffocated the pump, I would've thought I would hear it!

Thanks!

Noobz347 said:

Don't spin it with an impact.

I'll go out on a limb and say that the pump needs to be replaced, the return lines all need to be checked for restricted flow, and the entire system needs to be flushed of contaminates.

Click to expand...

No-go on the impact, got it.

I just took it out again for one last test drive, and my PS/PB came back intermittently twice. I've been eyeballing the whole PS/Hydraboost system and I noticed that the pump actually sends all the fluid to the Hydraboost before it goes to the rack. I'm only iffy about the pump because it's so new, relative to this Hydraboost unit with 180k on it lmao.



Thoughts on that, if it's intermittent with the original hydra unit? I ordered a new unit anyway (cause 180k) but the pump will be #2 on the list.