Freelander 1 Turbo whistle gone suddenly (SOLVED)

Shabe · Oct 17, 2024

Hello, today I was driving on the highway with around 2.7k-3k rpm with my freelander 1 td automatic diesel and all of a sudden the turbo whistle went away which comes whenever i accelerate.

Is it normal in the first place for turbos to whistle under acceleration/load? I searched a bit and got some mixed results but mostly saying that it might be a leak or something. Also a mechanic who heard the sound of this whistle from my car said it was normal.

After driving around 30-35 min with 3k rpm the whistle went suddenly away and i thought i blew the turbo or engine but I think i might hear it slightly as i accelerated hard afterwards, just a little sound from it maybe.

Anyways my question is if the turbo might be broken now?

Thanks

andyfreelandy · Oct 17, 2024

Td4 Freelander 1 turbo kicks in about 1750RPM with a whistle.

If no whistle most likely problem is either a boost hose or the small vacuum hoses that feed the turbo operating vanes.

pwood999 · Oct 20, 2024

Might be an idea to take the inlet pipe off & check the turbine for play, etc ?

My son's 2004 started following the whistle noise with a screech. Turbo bearing seals failed a few weeks later. It dumped loads of oil into the exhaust & inlet, followed by engine running even when switched off. Managed to stop it by engaging drive before it screamed it's balls out !!

Shabe · Oct 20, 2024

Does anyone know the name of the turbo hose part in the circled part of the picture? Mine is split there and I didnt even notice before someone pointed it out from looking at the picture here..

And is it for hot or cold side?

Freddie17 · Oct 20, 2024

Shabe said:
Does anyone know the name of the turbo hose part in the circled part of the picture? Mine is split there and I didnt even notice before someone pointed it out from looking at the picture here..

And is it for hot or cold side?

View attachment 328546

You’ll find part numbers here.
If keeping, I’d replace all the hoses with silicone

Search Genuine Cooling System Parts For Land Rover Freelander 1996 - 2006 Classic (l314) | Jaguar Land Rover Classic Parts

parts.jaguarlandroverclassic.com

Shabe · Nov 2, 2024

Thanks for all the help, it turns out I was blind.

Not my picture but to the right circle is where it was just open and disconnected… It got loose as I was driving and most likely due to me handling the plastic tubing when I was replacing the airfilter.

I opened the left one in the circle as well but it was just dirty and cleaned with brake clean, which is maybe not a good idea on plastic or rubber parts but I used only a little.

Also before there was always a loud turbo noise which I thought was normal but I think not anymore because now I tightened the clamps and deleted fault codes and it doesnt seem to smoke anymore and better acceleration with very little turbo sound..

There is still slight lag when pressing the gas pedal but i think its fine

hd3 · Nov 2, 2024

Shabe said:
There is still slight lag when pressing the gas pedal

see :

intercooler problem mod

Is biggamehunter still on here? If so can he pm me about this mod? I need some advice on the mounting of the sensor in the ally pipe. Ta.

www.landyzone.co.uk

[ no 'lag' on mine ]
i.e. the sooner the airflow flows thru the maf sensor,
the quicker the motor will respond to go-pedal input.

also .. unwanted 'lag' could be associated with the maf sensor begining to fail ..
although it's usually extreme .. as in a refusal to accelerate.
and also associated with engine bay heat .. which increases the intake air temp,
which in turn reduces the amount of fuel injected ..
[ hence the reason i added heat reflective tape to the intake ducting ..
[ and .. it does the job

..

Shabe · 2024-12-23T01:22:45+0000

hd3 said:
see :

intercooler problem mod

Is biggamehunter still on here? If so can he pm me about this mod? I need some advice on the mounting of the sensor in the ally pipe. Ta.

www.landyzone.co.uk

[ no 'lag' on mine ]
i.e. the sooner the airflow flows thru the maf sensor,
the quicker the motor will respond to go-pedal input.

also .. unwanted 'lag' could be associated with the maf sensor begining to fail ..
although it's usually extreme .. as in a refusal to accelerate.
and also associated with engine bay heat .. which increases the intake air temp,
which in turn reduces the amount of fuel injected ..
[ hence the reason i added heat reflective tape to the intake ducting ..
[ and .. it does the job ..

How noticable would you say the difference was with the tape added?

hd3 · 2024-12-23T14:26:15+0000

Shabe said:
How noticable would you say the difference was with the tape added?

what i did not like were the relative sluggish response to the go-pedal,
after the hot engine had been sitting for a while in warm ambient temps.
engine bay heat soak would effect the air intake ducting ..
it would take a couple of miles driving for it to cool down to normal
[ i use a 'scangauge' on the dash to monitor various data , including a.i. temp. ]
the heat reflective tape reduces the heat soak to the a.i. ducting,
resulting in improved go-pedal response ..
be a case of 'every little bits helps'

.................................................................
fitting a straight thru exhaust backbox .. also helps
as does getting the engine remapped ..
better torque response at low rpm = less strain on the clutch and drivetrain.
add in bigger tyres = no need to use higher engine rpm to get moving in a hurry ..
all in all .. a much better driving experience from my p.o.v.
.................................................................
.

Shabe · 2024-12-24T01:03:34+0000

hd3 said:
what i did not like were the relative sluggish response to the go-pedal,
after the hot engine had been sitting for a while in warm ambient temps.
engine bay heat soak would effect the air intake ducting ..
it would take a couple of miles driving for it to cool down to normal
[ i use a 'scangauge' on the dash to monitor various data , including a.i. temp. ]
the heat reflective tape reduces the heat soak to the a.i. ducting,
resulting in improved go-pedal response ..
be a case of 'every little bits helps'
.................................................................
fitting a straight thru exhaust backbox .. also helps
as does getting the engine remapped ..
better torque response at low rpm = less strain on the clutch and drivetrain.
add in bigger tyres = no need to use higher engine rpm to get moving in a hurry ..
all in all .. a much better driving experience from my p.o.v.
.................................................................
.

I looked at your post, is this the air intake and the yellow part being the reflective material?

Also will I need to mod the air intake as in the picture to be able to put reflective material for it to work? Or can I put it on the picture below?

hd3 · 2024-12-24T12:30:31+0000

i should have clarified ..
the reflective tape were only put on the metal tube parts.
that were after using an i.r.thermometer, to check surface temps on various parts.

the reflective tape were a bit of an after-thought,
once the ducting mod were completed.
i.e. the ducting mod were the important bit to improve go-pedal response.
...................................................................
i rekon putting the tape on the stock plastic ducting would be a waste of time and effort,
as the plastic don't get heat soaked as much as metal parts.
.....................
the main benefit of the ducting mod .. is for the airflow thru the maf sensor,
giving a quicker response to go-pedal demand.
.

Freelander 1 Turbo whistle gone suddenly (SOLVED)

Shabe

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andyfreelandy

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pwood999

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Shabe

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Freddie17

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Search Genuine Cooling System Parts For Land Rover Freelander 1996 - 2006 Classic (l314) | Jaguar Land Rover Classic Parts

Shabe

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hd3

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intercooler problem mod

Shabe

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intercooler problem mod

hd3

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Shabe

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hd3

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