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Old 01-12-2012, 04:08 PM   #1
aarave55
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Default '06 wrx Power steering problems

I have a 2006 Wrx wagon. The power steering was whining really bad and stuttering. I have replaced the pump with a used pump and have the same problems. I was getting a lot of air in the reservoir, so I did a fluid flush and replaced with new fluid. I have heard that the O-ring in the inlet line could cause this problem. But the same O-ring being bad in both pumps sounds like a stretch. The O-ring is a special ring that you can only buy from subaru with a new $480 pump. I have also heard it could be the steering rack. Any Ideas?
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Old 01-12-2012, 04:31 PM   #2
Turn in Concepts
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Unclip the reservoir and hold it above the pump while you have someone sit in the car and turn the wheel with the engine running. That should hopefully help.

Tony
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Old 01-12-2012, 04:37 PM   #3
bfedorov14
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Quote:
Originally Posted by aarave55 View Post
I have a 2006 Wrx wagon. The power steering was whining really bad and stuttering. I have replaced the pump with a used pump and have the same problems. I was getting a lot of air in the reservoir, so I did a fluid flush and replaced with new fluid. I have heard that the O-ring in the inlet line could cause this problem. But the same O-ring being bad in both pumps sounds like a stretch. The O-ring is a special ring that you can only buy from subaru with a new $480 pump. I have also heard it could be the steering rack. Any Ideas?
Is there still air bubbling in the reservoir?

If so, check your hoses. They may be shot. I had to go through this whole process last year.

New Hoses, worm drive clamps, New PS Fluid, Cleaned Reservoir, New O-ring in the inlet of the pump. It's a 54 cent part you can get at any hardware site... and it fixed my problem.


After you do all that, jack the front of the car up and put it on stands, and turn the wheel lock to lock 30 times.
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Old 01-12-2012, 05:27 PM   #4
aarave55
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The O-ring you got at a hardware site is it flat like the one in the pump or round? I have replaced the O-ring with a generic one that is round. But the one in the pump is round with flat sides. I have been unable to find one like it. I was wondering if it isn't sealing because of that. The hoses seem fine, I will replace the clamps with worm drive ones and see if that helps.
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Old 01-12-2012, 09:38 PM   #5
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what kind of stutting are you getting?? I have a bad whining sound to but my steering wheel shakes vary badly seeing if your having the same problem.
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Old 01-13-2012, 02:12 PM   #6
aarave55
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I'm getting shaking when I turn,and when I hit a bump It yanks the wheel as if it has very little power steering at all. I'm working on it today. Trying a different pump with new O-rings and new clamps. Fingers crossed
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Old 01-13-2012, 02:51 PM   #7
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Quote:
Originally Posted by aarave55 View Post
and when I hit a bump It yanks the wheel as if it has very little power steering at all. I'm working on it today.
I had this issue when I'd take a 90 degree turn. Usually when the wheel slowly glides back to neutral it jerked and then I heard whining, indicating low fluid or something. Are your boots leaking from the rack? I had a similar issue and my rack ended up leaking. But after I got the rack replaced, I'm running into a similar issue. It's weird cuz the hoses don't seem to have a leak or you'd see it within the engine bay. Hope you find out the problem.
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Old 01-17-2012, 01:13 PM   #8
aarave55
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Success!
I put the old pump back in with a new O-ring in the inlet line. I put new worm drive clamps on all of the lines to ensure they were sealing tight. I also discovered that one of the bolts that mounts the pump was stripped. I tapped the hole and put a new bolt in it. I'm thinking that might have been allowing the pump to move around a little and maybe cause air to get in the hoses that way. I drained all of the fluid, and put new in. I held the pump up as high as the lines would allow. At first it was way worse that ever, but after turning the wheel back and forth about 100 times, and making sure that the fluid stayed topped off, It is all working perfectly.
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Old 01-17-2012, 04:37 PM   #9
broncofangene
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There should definitely be a sticky on this. Just solved my issuse last week. Good job
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Old 01-18-2012, 03:39 PM   #10
68Cadillac
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Sure would be nice if someone opened up the PS Pump and listed all the o-ring sizes, the bearing size and the shaft seal size in a post so you could rebuild it yourself.
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Old 03-23-2014, 05:12 PM   #11
Aceinbass
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Quote:
Originally Posted by 68Cadillac View Post
Sure would be nice if someone opened up the PS Pump and listed all the o-ring sizes, the bearing size and the shaft seal size in a post so you could rebuild it yourself.
Here you go: http://forums.nasioc.com/forums/show....php?t=2127419

I just recently did this on my '06 wrx and had some trouble finding the appropriate O-ring. I was told by two different auto shops that the "flat" O-ring that came from my car started out round, this is false as the O-rings they sold me did not fit. After searching around, I found an o-ring in a set of A/C O-rings that fit perfectly.

Another tip, make sure to buy worm type clamps to replace all of the stock spring clamps.
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Old 03-24-2014, 01:45 AM   #12
breckwrx
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I have a related issue. When I try to turn sharply into, for example, a store parking lot by slowing down quickly after having just been going 45mph or more, the wheel hesitates and refuses to turn and almost fights back in shutters. It will also do this when I then turn sharply into a parking spot several seconds later. If I stop the car and turn the wheel back towards center, then re-turn the wheel it will make the turn. This went from very occasional and has become more frequent.

At first I thought it was just because its all-wheel drive (I've experienced something similar in trucks while in 4-wheel drive when turning sharply) but its been happening more frequently. Has anyone experienced this?

Lastly I bought the car with 104K last year and it currently has 135K miles.
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Old 08-25-2014, 05:40 PM   #13
SirRichieLee
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Having the same problem. Not sure what it could be on mine cuz mine is filling up the reservoir. Any ideas? Thanks in advance
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