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Old 01-27-2009, 01:58 PM   #1
Butt Dyno
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Default The OFFICIAL "I did donuts and now my steering feels funny" thread

You probably held your steering wheel at full lock for too long and killed the pump.

This is just so that we can merge all the upcoming threads into this one. And a public service announcement to do your donuts with care.
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Old 01-27-2009, 02:02 PM   #2
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You know, that's what I've read. So if I keep it at like 3/4 the pressure won't kill it or what?

In other words is there a "redline" for the steering wheel?
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Old 01-27-2009, 03:28 PM   #3
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Quote:
Originally Posted by Feign View Post
You know, that's what I've read. So if I keep it at like 3/4 the pressure won't kill it or what?

In other words is there a "redline" for the steering wheel?
That is correct. When you turn the wheel to full lock and the car makes that "stop it! You're hurting me!" sound you're pushing too far.
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Old 01-27-2009, 06:39 PM   #4
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When "no" means "no, don't, stop it" not "no don't stop it"?
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Old 01-27-2009, 10:42 PM   #5
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so whats the solution? new steering pump? my friend was having this problem after some "spirited" snow driving
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Old 01-27-2009, 10:51 PM   #6
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what does "funny" mean?
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Old 01-28-2009, 12:01 AM   #7
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Quote:
Originally Posted by Shiz36 View Post
so whats the solution? new steering pump? my friend was having this problem after some "spirited" snow driving
Yep45
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Old 01-28-2009, 12:15 AM   #8
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New pump... I just got done replacing mine
My first snow with it so I had to do the "perfect circle" donuts... I ended up having a small crowd watching me too.
Those were some expensive ass donuts though!
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Old 01-28-2009, 12:46 AM   #9
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It's sad we need yearly "Things that go bump in the snow" and "Things I was dumb enough to break during hoonage" threads
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Old 01-28-2009, 01:03 AM   #10
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what if i bump full lock for like 2 seconds and then bump it again in the other direction so i can get that perfect snow dorifto?
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Old 01-28-2009, 01:06 AM   #11
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If you're using that much steering, you missed "perfect" a looooong time ago.
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Old 01-28-2009, 01:08 AM   #12
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been there..done that, i'm on my 2nd pump back in 05 this happend
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Old 01-28-2009, 01:45 AM   #13
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What I'd like to know is what exactly "breaks" in case there's an easy fix. I had a pump go out a while ago. I took it apart, but really didn't see anything that screamed broken.
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Old 01-28-2009, 02:10 AM   #14
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Quote:
Originally Posted by williaty View Post
If you're using that much steering, you missed "perfect" a looooong time ago.
lol i know. i actually havent done anything like that in my car yet i was actually asking cause thats what usually happens when i park, but i didnt feel like getting off topic
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Old 01-28-2009, 02:31 AM   #15
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A little hint from the manual when pressure testing the pump:

"• Do not leave the valve of pressure gauge closed
or hold the steering wheel at stop end for 5 seconds
or more in any case, as the oil pump may be damaged
due to long keep of these conditions."

They didn't say what the damage would be. 1067-1165 psi pressure service limit for the Turbo's.

This is another hint though:

"Oil pump (Interior)
(1) Defect or burning of vane pump

Check the resistance to rotation of pulley.
If it is past the service limit, replace the oil pump with a
new one.

Resistance to rotation of pulley
Service limit:
Maximum load; 9.22 N (0.94 kgf, 2.07 lb) or
less"

My guess is that there is not enough flow at full lock to keep the vane seals cool and lubricated. Hence the "burning" out of the pump. It would be real interesting to see the vanes of a good pump compared to a dead one. At ~1000 psi it wouldn't take much to screw up the seals.
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Old 01-28-2009, 02:38 AM   #16
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i am not positive about all pumps, but ive taken apart a chevy 3100 series power steering pump before that was "blown out". when i took it apart, i cleaned everything up and put new seals back in as everything seemed like it should have been good to go. well, same problem, so i ordered up a new seal kit and vanes. the old vanes looked like they had been filed down ever so slightly compared to the new vanes. so i then put the new vanes in with the second set of seals, got all the air out of the system and worked like a charm.

not sure if the subaru pump is the same setup, but i would assume it to be very close...
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Old 01-28-2009, 02:47 AM   #17
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The old vane tips were slightly "flat" and the new ones were rounded?
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Old 01-28-2009, 03:01 AM   #18
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they were both rather "flat" on the ends that made contact with the pump housing. the old ones were just slightly shorter (if held side by side, looking down on them). also, make sure you put the vanes in the correct way, as they have a slight "v" shape to them. the fatter side goes towards the outside (pump housing)

:this is all for a chevy pump remember, i cannot speak for subarus as i have never taken one apart:: theres really not much to them...
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Old 01-28-2009, 03:20 AM   #19
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Makes sense. Shorter vanes lower seal pressure on the housing and with the "v" shape when the vanes are compressed the most, the wedge is tighter in the slot. Not having both due to wear would kill the ability of the pump to make pressure.

Never had any PS pump apart myself.
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Old 01-28-2009, 03:26 AM   #20
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yup.

i never really had thought to take one apart before, but we had a beater with a dead pump in the lot and it was slow one day at the shop. so i thought hey, ill go fool around with that. started taking it apart, and about an hours worth of labor time and staring at the pump going hmmm this makes sense, had it back together and working again. that time doesnt include waiting for parts
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Old 01-28-2009, 08:26 AM   #21
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I'll see if I can find my old one and take pics.... or maybe I already did. I'll have to look.
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Old 01-28-2009, 01:01 PM   #22
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*gulp*....I had an awesome time yesterday in a Baseball-stadium parking lot... now thanks to reading this thread I'm paranoid. Gotta pay attention to my steering now thanks hah.
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Old 01-29-2009, 06:13 PM   #23
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John thanks for starting this thread, anyways since I bought my WRX in May 08 I've collectively spent 5 minutes at sustained full lock and I spent another 2 yesterday before I heard a pop and squeal. Now the steering is really light then makes a weird sound at lock and has a little bit of pulsation at lock. Like everybody else in here, it's the pump right?
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Old 02-07-2009, 04:31 AM   #24
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Holy moly, this thread has scared the crap out of me! I was doing donuts this evening in a snowy/icy parking lot. I probably was doing them for a good 20-30 minutes, but I didn't hold the car at full lock for much of the time.

Anyways, I was told that there's not much to worry about doing donuts in snow, so I thought it was safe. That was before I did some more research of course. My car feels completely normal, but I haven't driven it much since then, so I'll hold my final judgment on that for a different time. All I can say is, I'm not doing any more donuts! It was lots of fun, but there's no way I want to be doing any repairs for a few minutes of fun. Please car, be ok!
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Old 02-17-2009, 12:59 AM   #25
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This thread needs links to replacement PS pumps because I'm in the market.

Haha.

RIP OEM P/S pump
2/13/09

You will be missed
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