power steering

Asked by devonlan Sep 12, 2017 at 04:27 AM about the 2009 Subaru Impreza WRX STI AWD

Question type: Maintenance & Repair

hi i recently changed the power steering belt and
return line o ring because i was getting whine and
squeal when turning with my 2009 sti. now when i
try to top up the fluid it seem to fill up ok with a fue
bubbles so i steer a little put some in it over and
over till it looks full then i put the cap on and it
barfs out the top. plus now my steering is heavy
and power feels like its cutting in and out with lots
of groaning.

3 Answers


Air bubbles. Turn wheel slowly lock-to-lock a couple of times to purge air. If no good re- inspect your o-ring service, as it sounds like it's still cavitating air.

1 people found this helpful.

it was the o ring. sucked it up and spent the cash on a oem. works like butter now.


The OE o-ring is a bit small, so after a few years it deforms into a triangular-crosssection that allows cavitation. A slightly thicker o-ring from a hardware store works better. You want a snug enough fit to overcome the stupid singular offset mounting bolt.

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