1989 240sx F/B Power Steering

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xs04298
Posts: 88
Joined: Sat Apr 30, 2005 5:09 am
Car: 1989 240SX Hatch/1991 240sx SE hatch

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I have been fighting with power steering failure for a while now, I have come to the end of my rope and dont know where to turn hope someone here has some clues..

*backstory*

Bought the car and put new engine in, noted a leak in the power steering pressure line. Drove it for a while with no p/s but i put some fluid in and it would work great untill the fluid ran out.

Had the p/s line repaired, put it back on and the p/s did not work, pump was making a loud rrrr sound, turned out when the line was repaired he brazed an end shut, np, fixed that and now i had it pressure tested and it flows correctly.

Unfortunatly I still have no power steering, ive tried bleeding the air for many many hours, it seems that the bubbles refuse to stop, when i run it for say 5 min the fluid becomes so airrated it looks like cream, and the p/s will only work for a few min before the fluid becomes airaited. I cant figure out why its doing this I looked for leaks throughout the system and there is no fluid escpaing it at all, with as much pressure that it is under i imagine it would leak if there was a hole or loose line..The rack worked prior putting on the new line, so i cant imagine that is the problem, but the pump i thought maybe burnt out when it was pressure locked, but i have tried a new pump as well with the same results...

Any ideas?

Thanks


NISTECH
Posts: 10585
Joined: Sun May 25, 2003 4:17 am

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lift the front end off the ground , top off the fluid. Then rotate the steering wheel fro lock to lock with the car not running 20 times. Top your fluid up again. Start the car. check your fluid level top up as neccesary. Turn the wheel from lock to lock 20 times again with the car running. You pump should not be making noise at this point. If it does start over with the car off. If the noise is gone lower the car to the ground and see if that took care of it.

s13sr20chris
Posts: 4148
Joined: Tue Jun 10, 2003 9:32 am
Car: '89 Nissan S13 w/redtop running 13psi and not leaking fuel anymore
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what pressure line is on the car now? are you sure its good?

User avatar
xs04298
Posts: 88
Joined: Sat Apr 30, 2005 5:09 am
Car: 1989 240SX Hatch/1991 240sx SE hatch

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s13sr20chris wrote:what pressure line is on the car now? are you sure its good?
Unfortunatly I have done this quite a few times, seems i cannot get the air out of the system. (at least an hour both running and not running)

I just had my old pressure line fixed, put in a new hose in place of the cracked one..

Tried more air bleeding to day, all im getting is really jagged ps right steering, no left p/s though. and the fluid is getting so foamy its overflowing from the resivoiur. Really miffed

NISTECH
Posts: 10585
Joined: Sun May 25, 2003 4:17 am

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This is gonna be messy but go to the rack and find the pressure line coming from the pump. lossen the line but dont take it off all the way. you are essentially going to bleed the p/s like you would your master cyl when it is installed. once you have it loose have someone rotate your wheel all the way to one side [car not running] before they get all the way to the stop close the line. make sure your resivor is full at all times. Go back under and crack the line again while they turn the wheel the other way again close it off before right before they get to the stop. You should see air pockets coming out if you truly have air in the system. It will cause sorta bursts of fluid when an air bubble purges. If you dont get any air bubbles when doing this its possible you pumps internal valving is shot.


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