P/s Pump
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Freshman User
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P/s Pump
Installed a new p/s pump today and pump is making noise like air in the line.
System has hydroboost. What is the best way to to bleed the this type of system. I turned the wheels back and forth for about 5 min. but the noise didn't stop
System has hydroboost. What is the best way to to bleed the this type of system. I turned the wheels back and forth for about 5 min. but the noise didn't stop
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Joined: Mar 2002
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From: Wake Forest, NC
It can take quite a while to get the air out of the system. I have seen these systems go weeks and still make noise. One tip that the A-1 Cardone tech line recommended was to try and use a mighty vac or similar hand vacuum pump to pull a vacuum on the resivoir while running. I've never done it as it will eventually go away, but it might be worth a shot to help purge the air bubbles. There is no real way to bleed the system, there is a lot of hose and tubing as well as little valves and orifices that the air gets trapped in as well as the fluid is very suspect to foaming and getting air saturated in it.
Posting Guru
Joined: Jun 2004
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From: Apex, N.C.
The easiest way I found to get the air out of the steering/hydroboost system is to jack the steer tires off of the ground. Start the truck and steer right/left while intermittently pressing the brake pedal.
Of the next Riffraff East
Joined: Oct 2004
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From: Concord NC
Ford says to use ATF. I know that PSF will make more noise and if I were you, I would change it out.
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Having just replaced the 4 hoses to/from the pump/steering box/hydro boost - I was pleasantly surprised that after filling with the recommended ATF I had no captive air at all - err, at least not that I have noticed.
I pulled the ignition (not the actual name) relay and cranked the engine while turning the wheels back and forth for a while. Perhaps that helped avoid the issue...??...
Good luck
~Paul
I pulled the ignition (not the actual name) relay and cranked the engine while turning the wheels back and forth for a while. Perhaps that helped avoid the issue...??...
Good luck
~Paul
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I just drained out as much of the p/s fluid that I could and filled with Mercon and the noise was significantly reduced. I will run for a while and then drain out again and hopefully all of the noise will be gone.
Of the next Riffraff East
Joined: Oct 2004
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From: Concord NC
That sounds like your problem. Might consider a complete flush. Pull your return hose off the booster (where it returns to resevoir) and put a long clear hose run into a gallon jug. Open the top of the resevoir and while engine is running, slowly pump brakes while adding ATF. The returning fluid will be the old and should be a differant color. Continue doing this until the color is the brite red color of the ATF. You may try turning the wheels slightly to speed thing up. Replace return line and fill to full mark. Shouldn't get any air using this method. I used syn. ATF when I did mine.
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