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additional oil pressure display
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Yankee_Rover
 


Member Since: 02 Jun 2021
Location: Seattle
Posts: 183

United States 2008 LR3 4.4 V8 HSE Lux Auto Zermatt SilverLR3

This is really cool.

Please consider doing a write up when you get it finished. I’d love to duplicate this. Or as Pete said, maybe consider selling kits.
 2008 LR3 HSE, 4.4L V8  
Post #227960218th Feb 2022 1:23 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 14103

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Hi Fuxl

Plus 1 what others have said , that looks the business Bow down

Massive respect to u and indeed regarding the kits Thumbs Up
  
Post #227961218th Feb 2022 1:58 pm
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Fuxl
 


Member Since: 29 Jul 2020
Location: Kirchstetten
Posts: 96

Austria 2006 Discovery 3 TDV6 HSE Auto Belize GreenDiscovery 3

When I have mine finished, I can do some kits at cost price...... or i will share the 3D data, the arduino code and all the bits and pieces in a short write up.

After that it shouldn't be a rocket sience to build it.

Sheep
  
Post #227968118th Feb 2022 8:00 pm
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pwheeldon
 


Member Since: 14 Jan 2020
Location: West Yorks
Posts: 1491

England 2005 Discovery 3 TDV6 S Auto Bonatti GreyDiscovery 3

Great work and plus one for a kit if you do one!!
 Discovery 4 GS 2009 Auto Stornoway Grey
Discovery 3 s 2005 Auto Bonatti Grey Gone
Discovery 3 SE 2005 Manual Zambezi Silver Gone
Range Rover Sport HSE 2006 Black
Aston Martin DB7 VV 
 
Post #227978719th Feb 2022 3:41 pm
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NC500
 


Member Since: 18 Sep 2017
Location: On the NC500
Posts: 541

Scotland 2014 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

Ditto on the kit
  
Post #227989320th Feb 2022 7:49 am
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Fuxl
 


Member Since: 29 Jul 2020
Location: Kirchstetten
Posts: 96

Austria 2006 Discovery 3 TDV6 HSE Auto Belize GreenDiscovery 3

Up and running Mr. Green



The boost sensor has not arrived yet. and I want to add a temperature sensors for oil and water later on.

The engine bay still looks a little bit........or little bit more like a mess. Embarassed I have to work on this.
Click image to enlarge


Motolab wrote:

Don’t do it if “peace of mind” is your goal

It will do the opposite…



Now I really understand you! Its driving me crazy seeing the pressure dropping below 1bar when releasing the throttle. Big Cry

next thing is to change the main bearings on the engine, and putting thicker oil in it.


For those who want a kit.....I'm evaluating what the best way would be.
Its for sure not plug and play, but it shouldn't be rocket science to install it.

I could 3D print the housing, install all the electronics in it. solder them up. Put the code on the micro controller. supply the connectors and the sensors.

But as you see on the picture above, I have no EGR tubes installed, and no engine cover. So I cannot figure out what is necessary to connect the sensor there if you still use the EGR. This would stay in your own work-scope. As well the wiring of the Sensor and the power supply to the Display.

Would this be a workable way for all of you?

best regards
Roland
  
Post #22815262nd Mar 2022 8:46 am
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Yankee_Rover
 


Member Since: 02 Jun 2021
Location: Seattle
Posts: 183

United States 2008 LR3 4.4 V8 HSE Lux Auto Zermatt SilverLR3

Roland,

That is really awesome work. Regarding the pressure drop when releasing throttle, maybe you can ask around if this is normal. I only know of procedures for checking oil pressure at various RPMs, so it seems it may normal for the pressure to drop when throttle is released.

As for the kit, I would encourage whatever is easiest for you. I think you’ve got 5-6 folks interested now, and more will probably approach you over time, so putting together a quick how-to write up and releasing the files on GitHub (or similar) might let you be more hands off. Maybe you can set up a little donation box for your trouble and ingenuity.

Because I’ve got a 4.4L petrol I expect that I’ll need to gather my own parts list and modify the programming of the Pi, so I’d be requesting your programming files anyway… I did a programming course a decade ago, so while i don’t expect to be able to do this from scratch, I think i could modify existing code to suit.

Edit: If selling a complete kit with sensors and the microprocessor programmed is easiest for you, definitely go that route.
 2008 LR3 HSE, 4.4L V8  
Post #22819044th Mar 2022 3:59 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10669

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Hi. Well done.

Did you not bother with the boost pressure in the end ?
  
Post #22819084th Mar 2022 4:18 pm
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Fuxl
 


Member Since: 29 Jul 2020
Location: Kirchstetten
Posts: 96

Austria 2006 Discovery 3 TDV6 HSE Auto Belize GreenDiscovery 3

Hi

I haven't got a matching sensor for the boost pressure...... its ordered but will take some time.
I will ad this feature later.

After I saw the oilpressure, I decided that there is no time to waste and at the moment I'm working on replacing the main-bearings

Click image to enlarge


Big Cry

best regards
  
Post #22822336th Mar 2022 7:44 pm
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Yankee_Rover
 


Member Since: 02 Jun 2021
Location: Seattle
Posts: 183

United States 2008 LR3 4.4 V8 HSE Lux Auto Zermatt SilverLR3

Shocked
 2008 LR3 HSE, 4.4L V8  
Post #22822346th Mar 2022 7:47 pm
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Fuxl
 


Member Since: 29 Jul 2020
Location: Kirchstetten
Posts: 96

Austria 2006 Discovery 3 TDV6 HSE Auto Belize GreenDiscovery 3

Back on topic.

I added a boost sensor...more or less for fun...don't know if it is really helpful.

but the graph looks cool Laughing

Click image to enlarge


and for better readability in the same size as the oilpressure

Click image to enlarge



I really want to add the oil temperature....but I couldn't manage to get a good reading from the original sensor. Rolling Eyes
Maybe I will add an addional thermistor to the oilpan.
I think oil temperature is very important to assess the oil pressure.

maybe I will ad a real water temperature sensor as well.
And a transmission temp-sensor would be like the topping on a cake Mr. Green

At the moment I don't really have the time to make a kit. Everything is pretty much in a very rough prototype status. And there is still so much to do. Maybe a little bit later. when my Disco is more or less finished.

best regards
  
Post #228939927th Apr 2022 11:28 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10669

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

i guess the cool way to get the 3 temperatures is off the CAN BUS

Simon is developing a CAN Relay. But don't think that would be what you want (unless you just set an over temp limit warning )

  
Post #228940027th Apr 2022 11:36 am
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Yankee_Rover
 


Member Since: 02 Jun 2021
Location: Seattle
Posts: 183

United States 2008 LR3 4.4 V8 HSE Lux Auto Zermatt SilverLR3

Fuxl, how did your main bearings project go? I have been wondering!

When I use my GAP tool, it doesn’t have a reading a for Oil Temp, only “inferred” oil temp. I believe it is simply reading water temperature and predicting the expected oil temp from there. Water Temp and Trans Oil temp I know exist, but you’d have to take them off the CAN network as Pete said. This is at least the case with the V8 and ZF 6HP.

No worries on the kits. Perhaps anyone interested can DM you questions?
 2008 LR3 HSE, 4.4L V8  
Post #228940827th Apr 2022 12:44 pm
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Fuxl
 


Member Since: 29 Jul 2020
Location: Kirchstetten
Posts: 96

Austria 2006 Discovery 3 TDV6 HSE Auto Belize GreenDiscovery 3

Hi

It was no problem to change the bearings from below the car.
I even managed to do it with the differential in place, but I would recommend to just remove the Differential as well.....much easier working under the car.
The most annoying screw is on the left side. the one for the Main bearing on the side of the engine. The rearmost. Its very hard to reach....especially with the Diff in.
Beside this I found that I have not the original engine in my car, and had to replace the new bearings again, because the new exchange engine needed different bearings........and so on.

Piece of cake Laughing

but more or less a better overview over my story is here:
https://www.disco3.co.uk/forum/feuerstuhl-...00043.html

I couldn't find it in the Gap tool as well.....but I already had to change the temp-sensor in the sump.....So it has to be somewhere.

@pete K:
The CAN-sniffing is really a great idea!! I will check if I can do it that way. CAN bus is a pretty simple protokoll. Its just hard to find the right values, as it is shown in that video.

best regards
ROland
  
Post #228948528th Apr 2022 6:12 am
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Falcon500
 


Member Since: 09 Dec 2020
Location: Lara
Posts: 10

Australia 2008 Discovery 3 TDV6 SE Auto Stornoway GreyDiscovery 3

Fuxl wrote:
Up and running Mr. Green



The boost sensor has not arrived yet. and I want to add a temperature sensors for oil and water later on.

The engine bay still looks a little bit........or little bit more like a mess. Embarassed I have to work on this.
Click image to enlarge


Motolab wrote:

Don’t do it if “peace of mind” is your goal

It will do the opposite…



Now I really understand you! Its driving me crazy seeing the pressure dropping below 1bar when releasing the throttle. Big Cry

next thing is to change the main bearings on the engine, and putting thicker oil in it.


For those who want a kit.....I'm evaluating what the best way would be.
Its for sure not plug and play, but it shouldn't be rocket science to install it.

I could 3D print the housing, install all the electronics in it. solder them up. Put the code on the micro controller. supply the connectors and the sensors.

But as you see on the picture above, I have no EGR tubes installed, and no engine cover. So I cannot figure out what is necessary to connect the sensor there if you still use the EGR. This would stay in your own work-scope. As well the wiring of the Sensor and the power supply to the Display.

Would this be a workable way for all of you?

best regards
Roland


Hi Fuxl, well done on such an elegant solution to the pressure gauge - how did you go with a kit? I would be interested in this, even if it is just the 3D print data, code and perhaps instructions on the electronics if it's not too technical?

Cheers.
  
Post #230444717th Aug 2022 1:02 am
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