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cykoh85

Member Since: 25 Apr 2022
Location: Selangor
Posts: 143

1990 Defender 110 200 Tdi SW Santorini Black

TDI 200 power steering noise when turning wheels

Dear all

Any idea about the sounds (please refer youtube link and forum link as below)?

https://forums.lr4x4.com/topic/107950-help-again-power-steering/

Recently I adjusted back the alternator base plate position as the triangle plate (2 bolts) were broken and replaced power steering belt as went missing. So after all the job been done and complete, I went to test drive, there was a sound (kindly refer above video) when I turn the steering.

Appreciated your guys helps!

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5th May 2023 7:30am

LandRoverAnorak

Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

I think the first thing I'd do is check the level of the power steering fluid. Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia

5th May 2023 7:58am

cykoh85

Member Since: 25 Apr 2022
Location: Selangor
Posts: 143

Hi Darren

I just check the fluid, the level is ok.

But looks like the sound come from the pump itself.

Anyway, thank you.

5th May 2023 9:37am

Bowbearer

Member Since: 12 Aug 2022
Location: Norfolk
Posts: 178

1985 Defender 110 200 Tdi SW Auto Baltic Blue

Try bleeding the system.

If there is air in the fluid level will appear high but pressure will be low.

8th May 2023 4:27pm

cykoh85

Member Since: 25 Apr 2022
Location: Selangor
Posts: 143

Hi Bowbearer

Do you know how to upload a video here?

I will show you the video.

Thank you bro

9th May 2023 11:45am

Bowbearer

Member Since: 12 Aug 2022
Location: Norfolk
Posts: 178

No I’m not that technical

All you need to do is fill the reservoir, start the engine and check that the fluid doesn’t drop, if it does fill as it falls.

Once it’s level and not dropping open the bleed nipple on the steering box whilst the engine is running.

Keep opening and closing until no bubbles come out.

Refill the reservoir to the mark.

Should be ok.

If it is still making that noise then check if the pump is loose.

The bracket holding it on the engine can crack as it holds the alternator as well.

If it’s not that then check the box.

Good luck

9th May 2023 8:45pm

geobloke

Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4410

The 200tdi pump does not like having the belt too tight as it can prematurely wear the bearings. They are not massively robust pumps.

As for the noise it sounds like air in the system, as others have said, even after topping up the system and waiting for the bubbles to circulate you can still have air in the system.

To check there is a bleed nipple on top of the steering box itself. Crack it open with the engine at idle and see if any air comes out. Add more ATF to the reservoir as the level goes down.

DO NOT turn the steering wheel at the same time as the PAS fluid will empty very quickly.

Tighten the nipple up, leave the engine idling and turn the wheel slowly from lock to lock a few times. Check the nipple for air.

Hopefully that will sort out your noise.

You may have to re-check the levels regularly for a bit.

Failing that you could try a PAS system flush. The system takes about 3 litres of ATF.

10th May 2023 11:41am

cykoh85

Member Since: 25 Apr 2022
Location: Selangor
Posts: 143

Hi

Ok, I will try and see 1st.

Thank you so much!

Bowbearer wrote:
No I’m not that technical

All you need to do is fill the reservoir, start the engine and check that the fluid doesn’t drop, if it does fill as it falls.

Once it’s level and not dropping open the bleed nipple on the steering box whilst the engine is running.

Keep opening and closing until no bubbles come out.

Refill the reservoir to the mark.

Should be ok.

If it is still making that noise then check if the pump is loose.

The bracket holding it on the engine can crack as it holds the alternator as well.

If it’s not that then check the box.

Good luck

11th May 2023 3:06pm

cykoh85

Member Since: 25 Apr 2022
Location: Selangor
Posts: 143

Hi

Ok, I will try and see.

Thank you.

geobloke wrote:
The 200tdi pump does not like having the belt too tight as it can prematurely wear the bearings. They are not massively robust pumps.

As for the noise it sounds like air in the system, as others have said, even after topping up the system and waiting for the bubbles to circulate you can still have air in the system.

To check there is a bleed nipple on top of the steering box itself. Crack it open with the engine at idle and see if any air comes out. Add more ATF to the reservoir as the level goes down.

DO NOT turn the steering wheel at the same time as the PAS fluid will empty very quickly.

Tighten the nipple up, leave the engine idling and turn the wheel slowly from lock to lock a few times. Check the nipple for air.

Hopefully that will sort out your noise.

You may have to re-check the levels regularly for a bit.

Failing that you could try a PAS system flush. The system takes about 3 litres of ATF.

11th May 2023 3:08pm

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