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Power steering fluid replacement

2.8K views 9 replies 4 participants last post by  dov tayles  
#1 ·
I decided that at 62K mi, changing my power steering fluid might be a good idea. Boy am I sorry I tried to do this proactive measure. I used correct Pentosin CHF 11s, as called for in the manual. Pulled out about 26 ounces of old fluid with a turkey baster, turned lock to lock a few times pulled out a couple more ounces, and replaced with new. Now my steering is not acting right. I lifted the front wheels off the ground to do about 20 lock to lock turns to try to bleed out any air. This hasn't helped. Did I screw up my steering system? Is there a proper bleeder valve, or a correct method to bleed air? Any suggestions?
 
Discussion starter · #3 ·
Well that’s a good question, and I wish I asked myself that more seriously before I got started. Anyway, the steering was making a little noise at the extremes. Nothing much, and I thought refreshing the fluid might help. Any ideas about how to bleed the air out?
 
Discussion starter · #7 ·
Assuming you drained and filled the correct reservoir?

It has to come out from somewhere, the air, so maybe try removing the reservoir cap when at idle? It sounds like there may be fluid cavitation occurring, and perhaps its just bad luck that happened to you, when normally it should have worked out in a matter of a minute or two.. keep an eye on fluid level for sure to keep pump healthy.

We may have to rub the magic lamp, but let's not bother him yet; he's likely busy or making music videos featuring his shop cat.
It was the one with an image of a windshield wiper.

[just kidding]

I try not to bother the geni[us] unless I am desperate.
 
Discussion starter · #8 ·
Follow-up: My mechanic used a vacuum to remove any remaining air. He did it once, then let the van sit overnight, then repeated. He got some bubbles out, level dropped, so it looks like the fix worked. Steering seems back to normal!

Note to self: do not change pm steering fluid that's performing its job.