This intermittent humming noise occurs only when I turn the steering wheel . Its sometimes not an issue at all after a cold start.
I checked my Power steering fluid and the level. They cool fine. Its not really that dirty.
I don't want to through parts at this issue. What do you suggest I check?
Thanks in advance for any help.
Someone overfilled the power steering reservoir by 125ml (1/4 of a waterbottle). So I removed the excess fluid.
I know now that it was overfilled for about 5 months since the last person that top it up to much.
The humming is really more like a whine. Its doing it less now.
The fluid was golden, and aerated. So I'm going to change that asap.
Since there is a faint whine during light /hard steering at idle and low speed. Would that indicate this excess fluid damaged my pump?
A whine from the pump usually means the pump is going, ir not already, bad. If it was way too overfilled, then it can cause issues. Best bet is to replace the PS pump, add new fluid, bleed it. But there also can just be air in the system. You can bleed it by making sure its full, keep the cap off, and with the car running, turn the wheel from left to right from stop to stop over and over again. it will make u tired, but if that dont help then its safe to say ur pump will or is bad and will need to replace it.
funkz24 wheel bearings will have a hum at any speed, just louder when ur speed is higher. They will dissappear when u turn (depending on the turn and what side the bad bearing is on) or get louder again, depending on where the bad bearing is at and which way u turn. So its safe to say his wheel bearing are fine.
Replace the pump, mine was doing the same thing whining and making so much noise even though it was still easy to turn. The pump costed me 40 dollars at advanced autoparts(remanufactured, no pulley, no resivoiur). Comes with new gaskets to reuse your old resiviour and the tool to put on the pulley, but you will have a 30 dollar core charge which you get back when you return your old pump and they will help you remove your old pulley off. Just put your old pulley on and the resiviour is held on by 2 clips, it's really simple when you look at it. Don't know what engine you have but with the 2.2s was very easy to get to and to remove it is very easy, 3 bolts through pulley and one behind it, and 2 hoses, one unscrews and ones clamp. Just buy the little 3 dollar power steering fluid too and you'll have it done easy, took me 45 minutes to do. Hope that helps.
