Arctic wrote:

I Have also read and heard good things about this company below, anyone used them and their services before please.

https://www.haldexrepairs.co.uk/

https://www.haldexrepairs.co.uk/land-rover...solutions/

Quote:

That's the same company I used for the VW via their eBay link.
Great service.

https://www.ebay.co.uk/itm/174802669287?mk...media=COPY

Ok so a bit late in my reply after unplugging the Haldex ECU to do the test, drove ok without any grabbing or scrabbling, it did show up faults on the dash/IPK.

1

2

3

4

Therefore according to the link added above i am or could be looking at the ECU being the problem, most likely N373 control valve being stuck open.

( UNPLUG THE HALDEX ECU, LEAVE FOR 20 MINUTES, THEN DRIVE TO SEE IF THE SCRABBLING ISSUE STOPS:-

If it no longer scrabbles (but you will get warning messages on the dash), then you are mechanically good, and this is just a control system issue – most often the N373 control valve is stuck open (we sell them here), replace the N373, the filter and oil, ensure a good blow out the oil route between the N373 Valve and the filter with the air line while the filter is removed.
If it still scrabbles, then the Haldex clutch pack is mechanically defective as it is sticking together or jammed inside. Replacement of the coupling is required.)

They are not open at the moment but supposed to be back on the 24th so a call should help me with more info.

There are videos that show how to replace N373 Jules

Quote:

There are videos that show how to replace N373

Jules

blaster1232 wrote:

Thanks everyone for your inputs. Since my haldex module seems to be ok after pinpoint test and the pump is running when connected to 12V, my main suspect is indeed the PTU and ripped splines.

In regards to sleeve coupling manual gearbox and PTU - there are two types of sleeve - for automatic and manual gearboxes. Automatic gearbox sleeves are the same between Volvo and Land Rover cars so you can pick whichever is cheaper. When it comes to manual transmission sleeves - They are not interchangable. Volvo sleeves are shorter, therefore, the only option is to buy Land rover sleeves - LR061606.

Main dealer in Latvia quoted me 476 EUR for this part, which is ridiculous. Managed to source an OEM sleeve for 183 EUR, and ordered it today (britpart was available for 130 EUR). I will keep you updated.

[quote="Arctic"]

Quote:

There are videos that show how to replace N373

Jules

Quote:

Hi Jules.
Thank you, i have three Gen 3 Haldex in my shed which I'm currently taking apart to see how they are and how they work, i have not yet removed the ECU from them, i wonder if they have the same N373 valve ? hopefully with the decent weather we are supposed to have i can get the PTU oil changed, drop the oil from the Haldex remove the pump, and fit a new filter even though the dealer i purchased from says they did it about 2 months ago (i do not trust them).

I can then check the N373 valve out on the Gen 4

Lakelander wrote:

blaster1232 wrote:

Thanks everyone for your inputs. Since my haldex module seems to be ok after pinpoint test and the pump is running when connected to 12V, my main suspect is indeed the PTU and ripped splines.

In regards to sleeve coupling manual gearbox and PTU - there are two types of sleeve - for automatic and manual gearboxes. Automatic gearbox sleeves are the same between Volvo and Land Rover cars so you can pick whichever is cheaper. When it comes to manual transmission sleeves - They are not interchangable. Volvo sleeves are shorter, therefore, the only option is to buy Land rover sleeves - LR061606.

Main dealer in Latvia quoted me 476 EUR for this part, which is ridiculous. Managed to source an OEM sleeve for 183 EUR, and ordered it today (britpart was available for 130 EUR). I will keep you updated.

Brilliant thread - thanks to all who contributed.
Ever since I bought my vehicle 4 years ago, It has had a Haldex fault but only in warm conditions. On setting off under light acceleration in a straight line the haltex appears not to release cleanly and makes a slipping sound.

Quote:

It sounds like a problem with the haldex clutch - a professional haldex service did not solve the problem. Anybody come across similar ? Any ideas?

[quote="I Like Chips"]

Arctic wrote:

Quote:

There are videos that show how to replace N373

Jules

Quote:

Hi Jules.
Thank you, i have three Gen 3 Haldex in my shed which I'm currently taking apart to see how they are and how they work, i have not yet removed the ECU from them, i wonder if they have the same N373 valve ? hopefully with the decent weather we are supposed to have i can get the PTU oil changed, drop the oil from the Haldex remove the pump, and fit a new filter even though the dealer i purchased from says they did it about 2 months ago (i do not trust them).

I can then check the N373 valve out on the Gen 4

Quote:

What is the spring pressure on the N373

Hi Mr Chips.
have not got a clue, but i did manage to remove the N373 valve yesterday from the Gen 3 Haldex.
1

I have three Haldex Gen 3 as spares.
2

3

4

5

Springs disc.
6

7

8

9

N373 valve.
10

11

12

13

Still need to find out if the valve is interchangeable with the Gen 4 valve ?

https://www.haldexrepairs.co.uk/shop/halde...373-valve/

These guys sell an N373 valve, but say it’s for Gen 4 only. Make of that what you will, but looking at your Gen 3 one, it is clearly different.

Borrowed pic off the net, credit to original photographer etc.

 (Now Sold). 2008 Freelander 2 (Nazca Sand) SE TD4 Auto. Statutory write off & on WOVR for hail damage but still road legal.
171037Km as of 09/05/22
Superchips Bluefin Flash
Nanocom Evo II (also sold)

Quote:

https://www.haldexrepairs.co.uk/shop/halde...373-valve/

These guys sell an N373 valve, but say it’s for Gen 4 only. Make of that what you will, but looking at your Gen 3 one, it is clearly different.

Borrowed pic off the net, credit to original photographer etc.

Arctic wrote:

Lakelander wrote:

blaster1232 wrote:

Thanks everyone for your inputs. Since my haldex module seems to be ok after pinpoint test and the pump is running when connected to 12V, my main suspect is indeed the PTU and ripped splines.

In regards to sleeve coupling manual gearbox and PTU - there are two types of sleeve - for automatic and manual gearboxes. Automatic gearbox sleeves are the same between Volvo and Land Rover cars so you can pick whichever is cheaper. When it comes to manual transmission sleeves - They are not interchangable. Volvo sleeves are shorter, therefore, the only option is to buy Land rover sleeves - LR061606.

Main dealer in Latvia quoted me 476 EUR for this part, which is ridiculous. Managed to source an OEM sleeve for 183 EUR, and ordered it today (britpart was available for 130 EUR). I will keep you updated.

Brilliant thread - thanks to all who contributed.
Ever since I bought my vehicle 4 years ago, It has had a Haldex fault but only in warm conditions. On setting off under light acceleration in a straight line the haltex appears not to release cleanly and makes a slipping sound.

Quote:

It sounds like a problem with the haldex clutch - a professional haldex service did not solve the problem. Anybody come across similar ? Any ideas?

Whom and what professional service was carried out on your Haldex ?

Arctic wrote:

only Land rover could come up with an idea like that.

I'm still thinking your problems stem from the control module. We also had the shuttle control valve fault code on the VW but the valve itself was fine, just the circuit board that controls it was corroded. Landrover - turning owners into mechanics since 1948

2014 Orkney grey Freelander SD4 GS.
2004 Zambezi silver Discovery 2 Td5 (Gone)
1963 Surf blue Morris Mini Minor Super de Luxe (my little toy)

Quote:

I'm still thinking your problems stem from the control module. We also had the shuttle control valve fault code on the VW but the valve itself was fine, just the circuit board that controls it was corrod