2005 Jeep Grand Cherokee P/S pump noise.

[artificialist]

My mother's 2005 Jeep Grand Cherokee is starting to develop P/S pump noise. The fluid level is okay. I am wondering: 1. Is there any additive you guys like to use to quiet down a noisy pump. 2. When the pump has to be replaced, what company makes the best remanufactured pumps? Mom plans to keep her Jeep for a long time.

 

[Chris142]

Originally Posted By: artificialist

2. When the pump has to be replaced, what company makes the best remanufactured pumps?

I don't know who makes the best but I recomend that you stay away from A1Cardon remaned parts.

 

[Lead Shoes]

Did you try just changing the fluid?

 

[Nick R]

If there is one thing that seems to be unique to many chrysler vehicles, it seem their power steering pumps whine a lot, even at higher RPMs when in good condition.

 

[Trav]

Quote:

When the pump has to be replaced, what company makes the best remanufactured pumps?

Not many good rebuilders around anymore, AC Delco is still okay but i would get a good used one if needed before messing around with Cardone or Atsco both have horrific failure rates.

 

[NHGUY]

If it has a remote reservoir,try replacing the reservoir.Chrysler PS reservoirs usually have a very fine mesh filter inside and it tends to partially plug and creates cavitation (hence the noise) in the pump.

 

[Donald]

Originally Posted By: NHGUY

If it has a remote reservoir,try replacing the reservoir.Chrysler PS reservoirs usually have a very fine mesh filter inside and it tends to partially plug and creates cavitation (hence the noise) in the pump.

Can it be cleaned?

 

[meep]

try sucking out the old stuff with a turkey baster, pressing it down into that mesh-- where you will pull out any grime collected. refill with the mopar PS fluid or amsoil. Their systems are sometimes very picky... wrong fluid = wheel shudder (how many caravans have you test driven, topped up with ATF, that have a horrid Judder in the wheel during turns?). If the fluid is low, you'll also get some noise... the WK PS pumps are pretty quiet-- so for it to be making noise is suspect. Some folks have had early failures of the steering racks in these vehicles (believe they are made by saginaw), starting with fluid loss... inspect for wet seals and hoses. M

 

[440Magnum]

Originally Posted By: Nick R

If there is one thing that seems to be unique to many chrysler vehicles, it seem their power steering pumps whine a lot, even at higher RPMs when in good condition.

I find that hard to believe, since they use a mixture of ZF and Saginaw power steering pumps, same as millions of other non-Chrysler vehicles out there. I've very rarely found any debris significantly clogging a return screen, either, but it is worth a check. Choking off the fluid return IS a good way to make the pump noisy since it will partially cavitate.

 

[440Magnum]

Originally Posted By: Donald

Originally Posted By: NHGUY

If it has a remote reservoir,try replacing the reservoir.Chrysler PS reservoirs usually have a very fine mesh filter inside and it tends to partially plug and creates cavitation (hence the noise) in the pump.

Can it be cleaned?

I have removed the reservoir from the vehicle and used Brakleen (red can- NOT the "non-chlorinated" stuff) and use the spray tube to blast that screen reverse-flow style through the line that goes to the pump intake. Then I slosh the brakleen around inside and then dump it. Repeat a couple of times, then let ALL the brakleen evaporate out (assist with low pressure compressed air if you want.). But like I said, there's *usually* not much in that screen.