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ROY SIMPSON

Active Member

• May 21, 2023

• #1

Freelander sd 2010 auto
Soft grinding noise when engine under load accelerating starting around 1500 rpm and gets louder with increased rpm but ceases when cruising.
No engine management warning light showing, no black smoke, no drop in mpg, oil level max, no oil leaks, gear changes smooth can't recreate when revving engine in park.

 

Nodge68

Well-Known Member

• May 21, 2023

• #2

It's probably the rear diff, which are known to fail. When were the driveline components serviced? If not been done, then check for silver in the rear diff and PTU oils, which will be the bearings on the way out.
The Haldex fluid should be clear, but if it's black then it shows the clutches are wearing.

 

R

ROY SIMPSON

Active Member

• May 22, 2023

• #3

Thanks for your reply.
Had haldex serviced and rear dif replaced about 50,000 miles 4\5 years ago by well known specialist in Worcestershire due to failing bearing.
The noise is definitely from the front of car and not the drone noise previously heard from the rear dif.

 

Nodge68

Well-Known Member

• May 22, 2023

• #4

The PTU is known to fail too, so I'd start there by removing a sample of oil for examination.

 

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ROY SIMPSON

Active Member

• May 26, 2023

• #5

Thanks for all your advice.
Problem solved split in turbo hose accessed between engine and under tray.

 

Nodge68

Well-Known Member

• May 26, 2023

• #6

ROY SIMPSON said:

Thanks for all your advice.
Problem solved split in turbo hose accessed between engine and under tray.

Click to expand...

If one boost hose has split, it's best to replace them all, as the others won't be far behind.