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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


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Old 05-24-2017, 09:39 PM   #1
Beerax
 
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S14 1uzfe swap Powersteering issues

I have a 95 s14 with a 1uzfe swap on a stock KA trans and all the other goodies. Well the 1uz is completely stock other than an intake. Long story short; I'm about to be on my 4th power steering pump. It SEEMS as if the pumps are starving for fluid.. I will go through a pump within 1 drift event. driving on the road I seem to have no issues. It's just under stress the pumps cannot handle it.

yes, I am bleeding the ps pumps, which is a very weird process and may not make sense trying to explain what happens and correct me if I'm an idiot doing this wrong.

I usually will Jack the car up, go lock to lock 15-20 times with the car off; 15-20 with it running. I pull the reservoir cap during this process. At times with the car off going lock to lock, obviously I top my reservoir off but it seems to SOMETIMES fill up and overflow at times as well with a ton of bubbles so I think hey I'm getting somewhere; well 45min-1hr later it's doing the same thing repeatedly, 2 bottles of ATF later.. this happens SOMETIMES as well with the car running. Sometimes the PS won't work when I set the car back down until I drive it around a good 5-10min (had to do it with my last pump)

I've just been trying to gather up the little things it could possibly be before I look upon the very last thing I can think it may be which is the steering rack. It doesn't leak; and I don't see why that'd be frying my pumps in such a short amount of time but who knows..

One thing I came across that MAY seem funky are the lines from the pump to the rack (stock s13/s14 rack). If someone could show me which line goes to what or if it even matters that'd be great. I pulled the top line off the rack which goes to my reservoir on the pump. Like I said; it seems as if the pumps are starving.
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Old 05-24-2017, 11:45 PM   #2
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Gotta be something wrong with the lines

After replacing a ps pump, proper procedure is to start the car for 1-2 seconds and shut it off/ top off the fluid. Do that 2 or 3 times. Turning lock to lock afterwards to bleed the system is correct, I do it with the cap on however.

Something's off though, shouldn't be going through pumps like that unless they are total garbage, good luck!
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Old 05-25-2017, 12:12 PM   #3
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Quote:
Originally Posted by Standard View Post
Gotta be something wrong with the lines

After replacing a ps pump, proper procedure is to start the car for 1-2 seconds and shut it off/ top off the fluid. Do that 2 or 3 times. Turning lock to lock afterwards to bleed the system is correct, I do it with the cap on however.

Something's off though, shouldn't be going through pumps like that unless they are total garbage, good luck!
That's what I'm falling back on as well, I'm going to try and swap some hoses around and see what happens. Thanks!
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Old 06-06-2017, 08:48 PM   #4
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Pulled lines, blew out with compressor for possible clog, nothing
Hooked up cooler with new return line hoses, nothing
Now I can't get pumps to stop groaning from the get go.

Pulled rack, looks in good shape to me nothing obvious. Not too familiar with them

No clue what to do next lol..
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Old 06-06-2017, 09:08 PM   #5
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There must be air getting into the system somewhere
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