no brakes, no steering

[matuva]

Have a 1996 Z71 with no brakes and no power steering.

That happens suddenly, no codes, just happens.

The serpentine is OK, no leaks, just it seems liquid is not moving in the power steering reservoir when turning the wheel.

I think the power steering pump is shot, but what I wonder is, why did that happen so suddenly ?
Someone experienced the same trouble ?

Any opinion ?

 

[ak diesel driver]

I've seen the shaft snap on ps pumps before

 

[625fireman]

I've seen the shaft snap on ps pumps before

:iagree:

seen this a couple times too.

 

[bk95td]

Again, plugged or kinked return line could cause this. Fluid has no where to go.

 

[Yachtcare]

Hydro Boost fault?

 

[Acesneights1]

Probably PS pump. There was a recall on some of them. My 2000 had it replaced for free.

 

[WarWagon]

In addition to the above, try this: Turn and hold wheel on stop and jam on brakes. Loose pump pulley or tensioner will show up esp. if engine is revved.

 

[Odlaw]

Have a 1996 Z71 with no brakes and no power steering.

That happens suddenly, no codes, just happens.

The serpentine is OK, no leaks, just it seems liquid is not moving in the power steering reservoir when turning the wheel.

I think the power steering pump is shot, but what I wonder is, why did that happen so suddenly ?
Someone experienced the same trouble ?

Any opinion ?

Mine was doing that every now and then - more so when I first cranked up in the AM. I removed the return line from the PS pump, stuck it in a bucket, cranked the truck and started pouring fresh synthetic fluid in the PS reservoir until I had fresh fluid coming out the return. The fluid that was in there was blackish-red, old crap.

Hasn't happened since.

 

[matuva]

That's interesting. Which one is the return line ?

 

[bk95td]

The 2 low pressure hoses. They have clamps ,not a crimped on tube and fitting

 

[dangerousdave]

Mine was doing that every now and then - more so when I first cranked up in the AM. I removed the return line from the PS pump, stuck it in a bucket, cranked the truck and started pouring fresh synthetic fluid in the PS reservoir until I had fresh fluid coming out the return. The fluid that was in there was blackish-red, old crap.

Hasn't happened since.

:iagree:
Have someone pump the brakes and turn the steering wheel as you flush, to fully purge the system. I did it before rebuilding the hydroboost.

 

[matuva]

Thanks guys :thumbsup:

 

[matuva]

:iagree:
Have someone pump the brakes and turn the steering wheel as you flush, to fully purge the system. I did it before rebuilding the hydroboost.

:bigear: now you catch my interest too.

Is that a difficult thing to do. Any tips I must care about ?

 

[Diesel -T]

To check for a broken ps pump shaft, iirc, disconnect serpentine belt & see if pulley will pull out some. Belt when in place will tend to hold pulley in place even tho shaft broken.

 

[Odlaw]

:iagree:
Have someone pump the brakes and turn the steering wheel as you flush, to fully purge the system. I did it before rebuilding the hydroboost.

Yeah, forgot to mention that - I had one of my sons do that.

 

[dangerousdave]

:bigear: now you catch my interest too.

Is that a difficult thing to do. Any tips I must care about ?

I remember some other posts about it, I ordered online the kit from M&B if I remember right.
I only used 2 of the seals, easy to do if you're careful.
Even with my shakes, I did it in an afternoon.):h

Really.

 

[matuva]

quick update.
The guy phoned me yesterday. He changes the power steering pump, and says still no power steering. Though, I think he didn't bleed properly.
I explained him how to. He will do this evening.

I will keep you updated.

 

[indybeck]

Dave, could you go into more detail about where you got the kit? I can't find them anywhere!! Thank you in advance...