Hydroboost Ghost

hacked89 · Jan 28, 2023

Every project gets a ghost.
Let me know what you think.
I think something is up with the red head box but..

Issue: install a new hydroboost unit, has power steering for about 30 seconds then no power steering. Then no power steering again no matter what unless you put a new Hyde boost unit. Line between hydroboost and steering box is warm/hot.

New ps pump
Tried two hydrboost units
No strange noises

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u2slow · Jan 28, 2023

What hb unit are you using? Do you have the ports/hoses correct? Are you sure the system has no air in it?

lotzagoodstuff · Jan 28, 2023

Strange ghost indeed. I seem to remember something about the hydroboost needing a power steering reservoir with two return ports. Might not be your problem, but I remember somebody saying you could not just tee the returns together.

hacked89 · Jan 28, 2023

u2slow said:
What hb unit are you using? Do you have the ports/hoses correct? Are you sure the system has no air in it?

1. F super
2. Yes
3. About to do a long bleed to see - maybe

hacked89 · Jan 28, 2023

lotzagoodstuff said:
Strange ghost indeed. I seem to remember something about the hydroboost needing a power steering reservoir with two return ports. Might not be your problem, but I remember somebody saying you could not just tee the returns together.

Im using a correct f super duty res

hacked89 · Jan 28, 2023

Ok who worked at the dealer in the 90s?
1 hour in, 320 lock to lock and 60 pedal and the steering seems to be coming back. This is going to be easily another hour.

No way labor was being burned doing this. Were you vacuum filling and then siphoning off the surplus?

Clb · Jan 28, 2023

Sounds like a bad hi pressure bypass...

1mouse3 · Jan 28, 2023

hacked89 said:
Ok who worked at the dealer in the 90s?
1 hour in, 320 lock to lock and 60 pedal and the steering seems to be coming back. This is going to be easily another hour.

No way labor was being burned doing this. Were you vacuum filling and then siphoning off the surplus?

Sound like air and have ran into it before on a obs/nbs chevys, but is rare to happen replacing lines. When happens, I will loosen the pressure lines one at a time so they weap fluid to get it to work. Never had the issue with my truck with a f-super hydro, then again I have a saginaw pump with a super size reservoir.

chillman88 · Jan 29, 2023

lotzagoodstuff said:
Strange ghost indeed. I seem to remember something about the hydroboost needing a power steering reservoir with two return ports. Might not be your problem, but I remember somebody saying you could not just tee the returns together.

For what it's worth I've run hydroboost for years with the returns teed together.

u2slow · Jan 29, 2023

chillman88 said:
For what it's worth I've run hydroboost for years with the returns teed together.

Same.

Clb · Jan 29, 2023

hacked89 · Jan 29, 2023

I set it up factory style not teed together but happy it’s working for ya’ll

I was out all day getting a 7.3 powerstroke exhaust as the foundation for this trucks exhaust and didn’t get to check it

It’s too early to tell, but my preliminary sense is I was bleeding it like a ford and I should have been bleeding it like a Chevy

Clb · Jan 29, 2023

Wish the sd reservoir was still available

hacked89 · Jan 30, 2023

hacked89 · Jan 30, 2023

Clb said:
Wish the sd reservoir was still available

I haven’t measured but couldn’t this work?

For 1999-2003 Ford F250 Super Duty Power Steering Pump 35251KD 2001 2000 2002 | eBay

1999 Ford F250 Super Duty 7.3L V8 DIESEL. 2000 Ford F250 Super Duty 7.3L V8 DIESEL. 2001 Ford F250 Super Duty 7.3L V8 DIESEL. 2003 Ford F250 Super Duty 7.3L V8 DIESEL. 2002 Ford F250 Super Duty 7.3L V8 DIESEL.

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Hydroboost Ghost

hacked89

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lotzagoodstuff

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Clb

Another old truck

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For 1999-2003 Ford F250 Super Duty Power Steering Pump 35251KD 2001 2000 2002 | eBay

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