Hey guys new to the forum. I have a 2000 Dak 4.7L with 165,000 on the odom. I've been batteling the ever irritation moan for months.

The moan is worse when i am stationary with more stress on the pump, the noise also increases in pitch with increase in rpms then goes away when going over 15ish.

I've replaced the pump twice, i've checked the lines for leaks, checked the rack for good pressure, checked the tie rod ends and ball joints, ran all the old fluid out and replaced with new fluid, the serpentine belt has good tension, there is plenty of fluid, and finally i have de-aired the lines multiple times.

Additional info- Romoved a 3 in body lift about 3 months ago but problem was happening before the removal. Running 32x11.5x15 Wild country XTX Sports. Nothing done to the exaust. No bearings are making noise, i have pinpointed it to that damn pump.

Sorry about writting a book gents but i could really use some help

 

which pump are you talking about im guessing a power steering pump but not quiet sure

 

Yeah. forgot to mention it

 

i found this dont know if it helps they say ford specificaly but they also say newer vechicals are common for this

• If everything seems to be okay and your pump still whines, then replace the pump, preferably with a new one from the dealer. The so-called rebuilt pumps that you can buy from places like Autozone, O'Reilly, etc. are cheaply rebuilt, especially if it's a Ford. They don't bleed out air properly, resulting in improper pump pressures. A good pump will bleed out almost immediately, with the turn of the wheel a few times. If it doesn't, then your pump will more than likely never completely bleed out. Buy a new pump from the dealer--it costs more, but if you're like me and don't like the noise, then it's worth it.

• You probably have air trapped in the power steering fluid system. Bleed the air out by revving the engine to about 1500-2000 rpms and turning the steering wheel almost all the way from one side to the other a few times. This should bleed out the air and take care of your problem.

• If the noise is similar to that of a dry bearing, then the problem is probably the power steering pump itself. If the noise you hear has a "click, click, click" to it when you make turns in your vehicle, then the problem is more-than-likely your CV joints. If the noise is screeching, check your belt for wear-and-tear and proper tension (see owner's manual), and the pulleys that the belt turns, including the air conditioning compressor motor and its clutch/pulley.
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That is great info moparman_2004 all too often the rebuilt parts we buy are not worth the savings or garbage we get from rebuilt.

But that’s not a new thing I never trust rebuilt it’s never as good as NEW but sometimes what you think is a new part may not be NEW unless you get it from a known good respected parts supplier.

Know your parts suppliers and their quality standards or lack of standards, buy new when you can you are better off.

Always expect a rebuilt part to not last as long as new or operate like a new part.

I remember back in the 1970's putting rebuilt parts in my brothers Jeep and next year replacing the same part again rebuilt is not as good as new.


Us back yard mechanics can be the cause of parts failure not the used part also by improper installation or using the wrong part wrong torque setting wrong tension so on.

 

I've heard this the rebuilt ones are better because they are likely the older ones where the new stuff is built over seas and is cheaply made. Are you sure its not your tensioner or you idler pulley?

 

Yea getting a good quality part is getting to be a hard thing to get with all the China crap out there.

I agree with that

But I have never seen a quality rebuilt part ever they come from China the Philippines’ or Mexico so same thing some parts all you can get are rebuilt so no choice like brake calipers I looked and looked no such thing as new just rebuilt.

 

Thanks for the help guys. I'm going to try the bleeding again while reving the rpm's like you said. Both pumps have been remanifactured, but i just can't imagine both of them being bad right away.

Could running slightly larger tires be putting more stress on the pump??

It sounds like air in the system to me but not like it is dry.

I'll let you guys know how it goes. thanks for the help

 

You know most older stearing pumps esp. in trucks seemed to do this.. matter of fact like Ford's as one example you HAD to run transmission fluid in it rather than power stearing fluid..

I'm thinking about doing the same thing in my Dodge as its getting quite old.. and I've always had great luck doing it.. Just like in the old fords.

 

use a different brand of fluid or use some seafoam trans tune look here for how to use in the power steering system http://www.seafoamsales.com/how-to-use-trans-tune.html

You could also try Lucas power steering fluid it has special lubricants in it