Power steering noise

[Eric.S.]

Hello everyone I was finally able to pick up my grenadier yesterday Unfortunately, I noticed at home that my power steering makes a strange noise. I think it's not a normal noise, or? The filling level in the container was at maximum with the engine warm but switched off. The German instructions do not say exactly in which condition the oil should be checked. Does anyone have an idea? I tried to post a video but I always see the file is too big (7mb)
Thank you

 

[MileHigh]

Mine was in the middle cold, but it definitely had been burping some fluid since there was some on the outside. Taking it down to the minimum, didn’t make any difference.

If being in the middle is the low point in noise, I can’t imagine what it would be like if it were louder. The damn thing sounds like a panther tank running its turret side to side.

And I am surprised it didn’t make the letter, or that someone hasn’t come up with a post fix. Of all the parts that have third-party replacementson the IG the steering pump would be definitely high on my list.

My wife definitely dislikes the whine. You can hear coming from half a block away. She would not have bought it based on that just alone. So it has to be costing them sales.

 

[HereinDaRockies]

The fluid level and the whine sound has correlation for one guy here.. probably from one data point that involved random experimentation.

It’s not the cause/solution to the problem “trust me dude”

Service techs would have done this…

 

[Tazzieman]

I do have a feeling the power steering fluid they used is rubbish and expands too much. Maybe they is another type.

Maybe worth emptying most of the reservoir, refilling with the grade specified in Rokdrs manual, bleed, drive, repeat.

 

[Zimm]

drive it with the cap off and see what happens.

 

[Tazzieman]

drive it with the cap off and see what happens.

The kitchen bicarb and vinegar volcano science demo!

 

[NQ94]

Hydraulic systems benefit from some pressure in the reservior. It generally allows the pumps to work better and last longer by reducing aeration of the fluid on the inlet side of the pump. Pumps naturally make more noise when a system function is being used and there is a hydraulic load on the system then quieten when in an idles state.

 

[Zimm]

The kitchen bicarb and vinegar volcano science demo!

Cover it with a rag. There seems to be a theory (which I’m not sold on) that having some expansion space in the reservoir has an affect. So, make the space a theoretical infinity and see if the noise dissipates.

 

[ppearman]

Dealer said that level should be at "Min" for cold engine. Going to tinker around with varying levels to see if there is any change, assuming I can find some CHF 202 in Cape Town !!

Tried various different levels from Min to Max - no change. I guess it was wishful thinking!!

 

[Skydance]

Tried various different levels from Min to Max - no change. I guess it was wishful thinking!!

Thanks for trying.

 

[HereinDaRockies]

Tried various different levels from Min to Max - no change. I guess it was wishful thinking!!

Stop wasting time trying random remedies. lol the unit itself is garbage

 

[Cheshire cat]

Some of the units may be garbage. I would guess the majority don't have this frustrating noise you are talking about. That isn't to say I have no empathy. Paying out this amount of money, they should all be the same.

 

[Skydance]

Stop wasting time trying random remedies. lol the unit itself is garbage

I realise that some have this issue and some don’t. It’s not perfect I know that and it shouldn’t be like this. It is what it is but at least some of us are trying. I want Ineos to work and haven’t given up just yet. In fact mines better than it was and I’m not crazy. Well I don’t think so , not yet.

 

[Cheshire cat]

Skydance
Perhaps your name has one thinking your head may be in the clouds.

 

[MileHigh]

Hydraulic systems benefit from some pressure in the reservior. It generally allows the pumps to work better and last longer by reducing aeration of the fluid on the inlet side of the pump. Pumps naturally make more noise when a system function is being used and there is a hydraulic load on the system then quieten when in an idles state.

Considering that I see on mine Somme escaped fluid, and I think others have mentioned the same thing, could the issue be as silly/stupid as a bad cap/seal that is allowing air infiltration?

Cover it with a rag. There seems to be a theory (which I’m not sold on) that having some expansion space in the reservoir has an affect. So, make the space a theoretical infinity and see if the noise dissipates.

I’ll look at 3-D printing a “top hat“ type cap that has more volume to maybe test out your theory, but in a controlled way.

Some of the units may be garbage. I would guess the majority don't have this frustrating noise you are talking about. That isn't to say I have no empathy. Paying out this amount of money, they should all be the same.

Be careful, if it were a GM product, they would just make them all suck. Actually Jeep is on the top of my shit list right now- nothing like an engineering and management two-fer problem to bring out the worse in organization.

Not to be a prick, but if you look at the demographics of Grenadier owners, excuse to a lot of old guys. I wouldn’t doubt that that frequency range of the pump is a pretty common deficit in the hearing of a lot of of the owners.

I have a 2024JLU with the same kind of steering set up, and it makes a whining noise, but it is quieter than the engine, and you don’t hear it first. So it’s not like anyone else has to make a silent pump, they just have to make it quieter than the engine. Or I guess you could make the engine louder by changing the exhaust.

 

[Skydance]

Considering that I see on mine Somme escaped fluid, and I think others have mentioned the same thing, could the issue be as silly/stupid as a bad cap/seal that is allowing air infiltration?

I’ll look at 3-D printing a “top hat“ type cap that has more volume to maybe test out your theory, but in a controlled way.

Be careful, if it were a GM product, they would just make them all suck. Actually Jeep is on the top of my shit list right now- nothing like an engineering and management two-fer problem to bring out the worse in organization.

Not to be a prick, but if you look at the demographics of Grenadier owners, excuse to a lot of old guys. I wouldn’t doubt that that frequency range of the pump is a pretty common deficit in the hearing of a lot of of the owners.

I have a 2024JLU with the same kind of steering set up, and it makes a whining noise, but it is quieter than the engine, and you don’t hear it first. So it’s not like anyone else has to make a silent pump, they just have to make it quieter than the engine. Or I guess you could make the engine louder by changing the exhaust.

The steering reservoir cap with a tiny hole is a vent hole to let pressure and fluid out. It’s designed this way.

 

[Clark Kent]

A lot of assumptions are being made about the pump and fluid level. We know very little about the electric motor drive unit.
Is the pump constant speed with variable pressure and displacement (flow), or variable speed with constant pressure and displacement and a bypass? What is the motor doing during steering operation and how much of the pitchy noise is coming from the motor?

I'm not current on electric PS tech. What's normal: Does the electric motor run at a constant speed and the pump does all the work; or does the motor speed vary to meet the steering demands?

 

[NQ94]

The CAAS Dare Fuxim is the manufacturer, Made in China. Going by their web site and some other sites their large 1Kw electrohydraulic pumps as well as their small models are external gear type pumps electronically controlled using CAN, speed, steering angle and pump motor position detection. Being an external gear type pump the displacement will remain constant every revolution with the system using speed of the pump to control the flow. 12Mpa maximum operating pressure 11L/m flow. From info on their site the pressure and flow compensation are achieved electronically from inputs from road speed, steering angle. The pump will have an internal relief valve for over pressure to protect the pumps hydraulic circuit when required.
With the pump being electronically controlled and some dealers suggesting there is no issue with the pump could the issue lie with the electrical supply ie connections, control software or sensor input errors not ramping up the pump speed enough or too slowly to meet the flow demands of the steering hydraulic system?
On a side note, Dare Fuxim share prices look to be performing well.

 

[Shopkeep]

I take it the pump switches location on LHD and RHD vehicles? Does the location of the pump on LHD vehicles make it somehow more audible? Are there other components around or near the pump that mask the whine in RHD models? Or is the piping run on LHD longer or different somehow contributing to the issue?

Most of the reports of this issue are coming from LHD markets on gas/petrol models.

 

[Tazzieman]

Most of the reports of this issue are coming from LHD markets on gas/petrol models.

The enormous giant intrusive footrest on the RHD models dampens all engine and ancillary noises

 

[Cruisey73]

I take it the pump switches location on LHD and RHD vehicles? Does the location of the pump on LHD vehicles make it somehow more audible? Are there other components around or near the pump that mask the whine in RHD models? Or is the piping run on LHD longer or different somehow contributing to the issue?

Most of the reports of this issue are coming from LHD markets on gas/petrol models.

Mine is a Diesel RHD (pump located on the left in front of passenger) and makes the noise. Very noticable with the window down.