I just wanted to add another two cents about the topic of bleeding or burping the power steering system:
1. Know what type of power steering fluid is needed for your car. Some power steering pumps can use automatic Transmission Fluid, others have specific power steering fluid for each car, i.e. Honda requires and suggests that you use Honda's brand of power steering fluid (see owner's manual). Make sure you know, or the warranty from the dealership or from the parts store may be voided.
2. Before attaching the power steering belt, fill pump with required amount and type of fluid (see owner's manual), and then turn the pulley wheel by hand a few times. This helps cut down on dry turns before they can happen. If more power steering fluid is needed, fill accordingly.
3. Attach the power steering belt with proper amount of tension (see owner's manual).
4. Turn vehicle on and proceed to turn the steering wheel all the way right and left 3-4 times.
5. Turn the vehicle off, and examine that the belt tension is acceptable, and again check the level of fluid and fill accordingly.
6. Always, always check your owner's manual before performing any maintenance on your vehicle. An educated car owner is a safe car owner!Another possibilityHow long has the pump run without fluid? There could be damage inside to the cam and rotor (assuming it's a vane type pump), or to the plates, or it could be cavitating due to the ingress of air -- possibly why the fluid leaked out in the first place.
I too experienced very loud whining noise from my 93 Ranger 3.0's power steering pump at idle, and even louder when turning the steering wheel even a little bit in either direction. I changed the fluid but there was no change in noise. I read in a Ranger forum that if you add some STP oil treatment (yes, STP OIL TREATMENT), not the whole can, it would help. I decided to give it a try and sure enough it has reduced the noise greatly. It didn't completely eliminate it but people no longer stare at my vehicle at red lights because of the noisy pump. That was embarrassing! Ford's pump must be partly to blame since the problem is so rampant among all their various models.
By the way, Mercury is supposed to begin being phased out (discontinued) beginning in 2010 and completely gone by 2012. Only Ford and Lincoln will remain. Just thought ya'll might want to know that since your Mercury's value will likely plummet as that kill-off nears. However, those of you who have a stiffy for Mercs may get a good deal on one before they are gone. I personally don't think they are "all that". Fords in general are pretty low market in build and longevity. I used to favor GM but switched to Honda products in the 90s, they are very long-lived. My latest is a Jaguar and I'm quite happy with it. Yes I know they were owned by Ford and now by Tata Motors but the design is all Jag.
Noise may be heard in a power steering line when the power steering fluid is low. Low power steering fluid may occur due to a leaking power steering pump in most cases. If the pump is not leaking, then the fluid needs to be added.
check the power steering fluid level. I would have to say your low on fluid.
If your power steering pump makes a whining noise as you turn your steering wheel your power steering fluid reservoir is probably empty. The noise is caused when your power steering pump tries to pump fluid that is not there. This indicates that you probably have a leak somewhere in your power steering fluid lines. You can either try to find the leak or simply replace the power steering fluid every so often.
What will happen if u I added power steering fluid to a leaking power steering pump
check your power steering fluid
power steering fluid not filled?
After bleeding the power steering the pump may make a noise because there isn't enough power steering fluid in it.
Yes it does. Check your power steering fluid level.
Power steering fluid is added to the power steering fluid container. It is located under the hood of this car, with a lid stamped with 'Power Steering'.
Could be your steering fluid is low? My 1982 GMC pickup truck makes a noise when my steering wheel fluid gets low.
Yes, The power steering fluid reservoir is on the pump. The fluid is checked and added at the same location.
You might be low on power steering fluid
It probably needs power steering fluid added.
Check the power steering fluid level. Low fluid is the most common cause. If the fluid is ok then the pump may need a rebuild or replacement.
Power steering fluid smells burnt, sometimes I add fluid, cause its down
Faulty power steering pump, bad power steering fluid, insufficient or excessive power steering fluid.
Perhaps low power steering fluid Perhaps power steering pump is going bad Perhaps low power steering fluid Perhaps power steering pump is going bad
If you mean "what" is making noise when you turn the steering wheel? It usaually means you need power steering fluid. If you run too long without power steering fluid it will make your power steering go out. If it is making a shuttering noise when you take sharp turns. Your rear differential may need to be serviced. I would have is burnished.
Noise from am power steering pump can be caused by several things. The fluid could be low, the belt could be loose or the pump can be beginning to fail.
Typically if your power steering fluid is low your car will make noise when you turn the wheel. If this is that case, I suggest taking your vehicle to an auto shop and have them do a power steering fluid check.
mine needed power steering fluid
the car may be low on power steering fluid
It is important to maintain the fluid levels of a car. In this car, power steering fluid can be added directing to the power steering reservoir under the hood, labeled with a cap stamped with power steering.
It is likely to be the power steering pump complaining that the power steering fluid is low.
It could be low Power Steering Fluid. You should refill it with the proper fluid as recommended by the manual.