Powersteering loss and spongy brakes
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Freshman User
Joined: Nov 2017
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From: BCS Texas
Powersteering loss and spongy brakes
Leaving work Friday, my powersteering felt like it wasn't working very well and the pump was whinning. I figured that it was just a little low on fluid as it has done that before or that the system was a little frozen (it was -34) after sitting outside all day. It drove well enough for me to make it home and I let it thaw in the garage until this morning, then cranked it up and went to leave the house but have absolutely no powersteering and barely any brakes. The pump was replaced a few months ago after a long battle with a leaky hose so the fluid is new as of then as well. Any ideas?
My thoughts as of now are possibly the powersteering pump, hydroboost, or possibly some issue with the steering gear?
Background on the truck is 340,000 miles, i have changed the powersteering pump, all lines, and I believe the hydroboost was changed at some point.
My thoughts as of now are possibly the powersteering pump, hydroboost, or possibly some issue with the steering gear?
Background on the truck is 340,000 miles, i have changed the powersteering pump, all lines, and I believe the hydroboost was changed at some point.
Postmaster
Joined: Nov 2015
Posts: 4,807
Likes: 125
From: Colorado Springs
It’s the pump, if it starved for fluid do to a leak it’s most likely dead. My hose blew as I was backing up the driveway, pump 2yrs old, it was dead.
‘Think about how fast the pulley is turning even at idle, now consider that at 2500 RPMS. New pump, flush the fluids and air...then check level regularly.
You should see cavitation and fluid returning at the neck of the reservoir...in the video you can see the fluid moving.
‘Think about how fast the pulley is turning even at idle, now consider that at 2500 RPMS. New pump, flush the fluids and air...then check level regularly.
You should see cavitation and fluid returning at the neck of the reservoir...in the video you can see the fluid moving.
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Freshman User
Joined: Nov 2017
Posts: 40
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From: BCS Texas
Colorado350, I would agree with you that except when I checked the fluid level it was full so, I don't think that killed it. Is there a way to test a pump while its in the truck? Maybe adding a pressure gauge in somewhere or would disconnecting a discharge line be enough to confirm its dead?
Hopefully something simple, its my daily driver and I cant exactly walk to work in Alaska right now.
Hopefully something simple, its my daily driver and I cant exactly walk to work in Alaska right now.
Postmaster
Joined: Nov 2015
Posts: 4,807
Likes: 125
From: Colorado Springs
Colorado350, I would agree with you that except when I checked the fluid level it was full so, I don't think that killed it. Is there a way to test a pump while its in the truck? Maybe adding a pressure gauge in somewhere or would disconnecting a discharge line be enough to confirm its dead?
Hopefully something simple, its my daily driver and I cant exactly walk to work in Alaska right now.
Hopefully something simple, its my daily driver and I cant exactly walk to work in Alaska right now.
Mine was full also, it went dry for few miles while driving. if you look at my video, there’s no foam or bubbles, before I changed it the steering pump it was foamy and not moving and the steering was difficult. You should be able to see fluid returning like you do in the video. I’m still going with it’s the pump...
Laughing Gas
Joined: May 2007
Posts: 793
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That behavior was what I got when two pumps died on mine. Each had about 35K on them. First was factory new. Full of fluid too. The second puked fluid out the seal shortly after it misbehaved.
Truck is in the shop for a renovation and the third one will not have an opportunity to die on its terms. Am probably going to go with an aftermarket as this is one part where OE does not look like it has the best reputation.
Truck is in the shop for a renovation and the third one will not have an opportunity to die on its terms. Am probably going to go with an aftermarket as this is one part where OE does not look like it has the best reputation.
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clem1226
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Oct 19, 2011 10:09 AM
