Freelander 2 (LR2) Whining noise won't go away after replacing the power steering pump and steering rack

I have a very unfortunate situation with 2013 Freelander 2 (LR2) with the TD4 engine paired with manual transmission (182k km / 112k miles mileage).

It started to develop a whining noise in the higher revs (after ~1700 rpm) and while using the engine break (check the video from my post on Reddit to hear the sound). I took it to the main dealer and they said that it needs to have the power steering hydraulic pump replaced. They recommend replacing the steering rack as well based on some similar experiences that they had with other cars. Finally I was quoted 4200 euros (parts + labor) which is crazy considering that in my local market (I live in Romania) the car would be worth around 11-12k euros.

I refused the offer as it was way too expensive and found a local mechanic (not LR specialist as we don't have such thing here) with very good reviews. Originally he replaced the pump with an aftermarket one produced by Meyle. During the process he observed that I had the wrong power steering liquid. Instead of the green one, I had some pink one (very dirty) with lower viscosity. I never replaced it since I bought it from the Netherlands (checked all the service history that I've done at the dealer) hence that's how I bought it. Quite a shame that the dealer hasn't checked the liquid while it was there for the annual service.

He cleaned the liquid and replaced it with the correct one (he said it was flushed multiple times until it came in the correct color) and then installed the new pump. Unfortunately the whining sound was exactly the same. Later, he suggested that the steering rack has to be replaced as well. We went with an aftermarket part (it was 600 euros, but don't remember the manufacturer). The new rack was installed, he flushed the liquid again and no happy result. The power steering works, but it still produced that annoying sound.

The next step was trying another new pump from a different manufacturer without success. The sound didn't disappear. He took my old OEM pump and the Meyle one to a company that analyses hydraulic parts and they said that there were some very minor differences. Based on that he suggested me to find an OEM pump from a written off car which I did. He installed that one (of course replaced the liquid again) without any success.

Eventually he got in touch with an LR specialist and he said that back in the days they were using some additive and a standard procedure to get rid of the whining noise after replacing the power steering parts for the cars that came for warranty. The procedure has to be done on the road, not stationary and it involves several steers to the right and left or something like that (I don't remember the whole procedure).

Now I'm waiting for the mechanic to try this last resort. He said that if this doesn't work, he doesn't know anything else that he can do. Did any of you have any similar experience? I'm very anxious as I really care for this car and I don't know what else to do if this last option with the additive fails. Living in Romania I only have one main dealer on a 400km / 250 miles radius and of course no Land Rover specialist.

EDIT: He just called and the last option with the additive failed.

Are you sure it’s the power steering causing the whine, after all that work?
And was the power steering fluid bottle changed?

Freddie17 said:

Are you sure it’s the power steering causing the whine, after all that work?
And was the power steering fluid bottle changed?

Click to expand...

My mechanical knowledge is very limited. I asked the mechanic the same question and he said that he is sure about the source of the noise. Considering the main dealer said the same, I trusted him (he's not aware I took it to the dealer before). Of course if he won't be able to fix it using the last trick, I'll take it to a different service and ask for a third opinion.

Regarding the fluid bottle, yes it was changed.

If he was sure of the source of the noise... I wonder why replacing it didn't fix it. And why would he then replace something else that wasn't the source of the noise?

I presume the F2 PAS pump is driven by a drive belt - has everything else that is turned by the belt been checked (including tensioner)?

In fact, has the belt been checked? Is it soapy water you spray on a belt to stop it making noises? Is it only V or ribbed belts that applies to?

If its only when the engine is spinning quickly and lots of air passing through it, is the turbo OK?

get your man or the next garage to change the fluid reservoir as below in the video.

make sure he gets a genuine reservoir, the car need to have the front wheels just off the floor to turn left or right lots of times without stating the engine.

The header tank has a filter in it that can get blocked. As it is easy to change and much cheaper than a pump or steering rack it makes sense to change that first. Normally noisy power steering is due to Air in the fluid or starvation of fluid on the suction side of the pump. First I would change the header tank and check there is no obstruction in the pipe that then feeds to the power steering pump. To clear the air from the steering rack normally you would jack the front wheels off the ground and turn the steering with the engine running from lock to lock. I had endless problems with an older freelander steering, have a look at this video.
But then the 2007 and 2008 had a problem with the steering rack not being properly cleaned out in manufacture.