kgilmore

I need some hep from you guys. About 2 weeks ago i started getting the bad power steering whine when pump is about to go out. So i took the car to the dealer and had them check it out. they said the power steering was going bad, and needed to get a new one. Ok, so i went to autzone, tried two different pumps and they sounded like the bad one if not worse... I then went an tried two more expensive ones from carquest, and something as well happened. While still having the last pump on the noise had gone down mostly after driving for a while but was still noticeable when taking off from a stand still or giving gas at low speeds, higher speeds don't seem to have an issue. i then took it back to dealer an had them look at it again.. now they say pump sounds normal and getting whine noise when press gas cause using an aftermarket pump.. the BS they try sailing you.. So to prove them wrong I took the 4th pump back and got a pump from dealer. installed pump, resivour has been plashed at least 4-5 times, have updated the o-ring to inlet hose, and even replaced hose from resivour to pump.. after letting car sit for a couple minutes from cold start the noise mostly goes away but still when pressing gas the noise is there, the more gas you give it, the louder the sound gets. does anyone know what could be the problem.. onlything i haven't tried that i'm wondering could be it is the serpentine belt. thoughts, ideas, any help..

pohljm

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nismopowerdqg

sounds like my auto tensioner story.. i got one from napa bc mine was squeaking, i put the new one on and its even worse.. just haven't gotten around to returning it and trying again.

eg5

iTrader: (4)

while the car is running, remove the reservior red cap and check for bubbles. also have someone else rev the engine while you check the reservior for air bubbles.
there shouldnt be any bubbles in the system. if bubbles are present, then you have a leak somewhere else. but i get the idea that you know this already.
good luck and keep us updated!

kgilmore

is it possible to have bubbles in the reservoir when pressing gas but not present when not pressing gas in case none is around when i try.. cause i have done it without someone pressing gas an no air is present.. also where else could there possibly be a leak, being it can sit for days an no change in the fluid level, not to mention the pressure hose has already been replaced under recall couple years back.. could it be bad again?

eg5

iTrader: (4)

you can have a power steering rack leak. leak at other lines/hoses. sometimes a leak doesnt mean youll see it immediately.
and ive seen air bubbles rise when giving it gas while turning the wheel.(putting load on p/s system)
maybe you can take a video of said noise.

I hate cars

The power steering pump whine is not load based, only rpm based. If "giving it gas" means higher rpm and the whine gets worse, it could be the pump. If it means a higher load, in gear only, it's probably not the power steering pump. Engine load has no effect on the pump, only rpm.

eg5

iTrader: (4)

raising the engines rpm or turning the wheel at any rpm speed has no load on p/s system?

I hate cars

Engine load. Although the pump virtually freewheels when there is no steering wheel input.

eg5

iTrader: (4)

if i connect a pressure guage to the service port at the pump, raise the engines rpm, will the guage remain steady? or will it increase?

what if the steering wheel is turned from left to right but engines rpm is not increased? will the guage increase or decrease?

if the guages dial increases, wouldnt that constitute as an increase in load to the power steering system?

kgilmore

yea, giving it gas means raising the RPM's. when sitting in park, or taking off from a stand steal it makes the noise till reaches about 50mph. an could be the pump, so your telling me i could have bought 5 bad pumps in a row? i find that hard to believe, could it be a leak in the pressure hose?

I hate cars

Pressure will remain farily steady with rpm. It will increase when you turn the wheel. This also depends on the pump itself, specifically the bypass. That's why when there's noise from air in the system, the noise will change in pitch when you raise the rpm but to make it significantly louder you have to turn the wheel. There can be some change in pressure with rpm but it's usually minor.

I have a feeling it's a mis-diagnosis. You could be getting air in the system from somewhere else in the system. Anything from the reservior to the inlet of the pump will let air in the easiest. It can be the rack or a hose.

Does the noise get worse when you turn the wheel side to side?

kgilmore

I have a feeling it's a mis-diagnosis. You could be getting air in the system from somewhere else in the system. Anything from the reservior to the inlet of the pump will let air in the easiest. It can be the rack or a hose.

Does the noise get worse when you turn the wheel side to side?[/QUOTE]

Thats what i was thinking also, what bout the other hose coming from reservoir? not the hose going from reservoir to pump being i changed that as well. i'm hoping its not the rack, and no it doesn't change any when turning wheel..just when accelerating.

kgilmore

Thats what i was thinking also, what bout the other hose coming from reservoir? not the hose going from reservoir to pump being i changed that as well. i'm hoping its not the rack, and no it doesn't change any when turning wheel..just when accelerating.

I hate cars

If the noise doesn't change when turning the wheel, probably isn't the power steering. You might want to start looking at the idler and tensioner pullies.

kgilmore

I Hate Cars, whats the best way of doing this? Even thinking about going to an acura specialist in the morning an see what they think.