Member Since: 26 Mar 2007
Location: Chandler's Ford
Posts: 3459
Normal TDV6 Operating Parameters
Hi,
Just been playing with the Live Values on my IIDTool Beta. Wow. Have to say, the guys over at GAP Diagnostic are doing an amazing job on this. 8)
I never realised there were so many components on a D3 that provide so many pieces of feedback to the various ECUs. Just monitoring a few TDV6 Engine values on my commute home this evening has prompted me to try and find out a little more about what goes on under the bonnet of my D3 TDV6.
I'm especially interested in what are considered "normal" operating parameters for a TDV6 engine. For example, I've driven home this evening whilst displaying certain live values on my iPhone. There's no problem with my D3 - as far as I am aware - I'm just interested in what are considered acceptable ranges for certain values when a TDV6 gets up to a stable, normal, operating temperature, cruising at 70mph on the motorway.
The values I'm most interested in are:
Coolant Temperature
Engine Oil Temperature
Manifold Air Pressure Range
[Pauses momentarily to push imaginary spectacles up bridge of nose]
That will do for now. Are these documented anywhere?
Once up to normal operating temperature, the oil and coolant temperatures sat at ~87°C ±3°C all the way home. They increased slightly when going uphill and went down again when going downhill, as expected.
The manifold air pressure fluctuated (obviously), pretty much in line with the position of my right foot
"What an interesting life I must lead", you're probably thinking at this point. You would not be wrong!
Now, if you'll excuse me, I'm just off to my local history meeting at the church hall. Bernard is doing a presentation on the history of basket weaving in the early 1800s this evening. Can't wait!
Steve2021 BMW iX3 Premier Edition in Carbon Black ⚡️🔌
2019 Škoda Kodiaq 2.0 Tdi 190 DSG Sportline in Quartz Grey. Excellent vehicle. Gone.
2017 Discovery Sport HSE Auto in Carpathian Grey and Ebony Leather. Modern JLR Junk. Gone.
2007 Discovery 3 TDV6 S Manual in Zermatt Silver with Ebony Cloth (143k) Gone, but now patrolling the Asia section of the West Midlands Safari Park!
Last edited by Woolmeister on 11th Mar 2014 9:25 pm. Edited 1 time in total
11th Mar 2014 9:15 pm
woody32 Site Sponsor
Member Since: 11 Mar 2009
Location: Somerset
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I'm not sure on the basket weaving but basket case comes to mind
I would images if you have no issues with your car then all values would be as you seen them in most cases but would be interesting to compare Wanted D4s non runners pm for competitive price.
IID Pro MV License - D3/4 RRS - Enabling, Updates,Transmission flushing.
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11th Mar 2014 9:22 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
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From this point onwards masturbation would seem like an acceptable hobby.Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 26 Mar 2007
Location: Chandler's Ford
Posts: 3459
@Kris
Yeah, I thought it would be interesting to compare what sorts of values others are seeing in their cars. For what it's worth, my Manifold Air Pressure sat at around 102 kPa at idle and went up to about 220 kPa when giving it the beans.
I don't know if these are considered within limits?
@Robbie, no need for remarks like that. I know you're interested in this as well.
Steve2021 BMW iX3 Premier Edition in Carbon Black ⚡️🔌
2019 Škoda Kodiaq 2.0 Tdi 190 DSG Sportline in Quartz Grey. Excellent vehicle. Gone.
2017 Discovery Sport HSE Auto in Carpathian Grey and Ebony Leather. Modern JLR Junk. Gone.
2007 Discovery 3 TDV6 S Manual in Zermatt Silver with Ebony Cloth (143k) Gone, but now patrolling the Asia section of the West Midlands Safari Park!
11th Mar 2014 9:35 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Land Rover - Turning Drivers into Mechanics Since 1948
102 kPa (1.02 bars) - about right for idle as it's around normal atmospheric pressure, because at idle the turbo isn't capable to raise the intake pressure.
220 kPa (2.2 bars) - about right, depending on RPM and what you understand by giving it the beans...
The WOT intake pressure can also go up to 250-270 kPa, depending on RPM.
The expected values, that should be close to the real values on a good working engine, could be extracted from the engine maps inside the engine ECU. You can ask here an engine tuner, like Pete Bell, to tell you those...
11th Mar 2014 10:21 pm
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20793
I'll admit, I done the same
Just a pity the live torque reading never reads above 404Nm with any diagnostic kit. That could be interesting My D3 Build Thread
Engine temperature is about normal - the gauge will stay roughly in the middle from about 77'C to 95'C - once above 95'C is shoots up and the red light comes on. This happens with your viscous fan speed sensor is knackered and the ECU thinks its going full chat. Ask me how I know.
MAP sensor will be at around 100kPa depending on atmospheric at the time - in the Pyrenees last year, I saw it down into the low 90's
I have a remap and an offroad IC, and the MAP pressure on mine will peak at 254kPa at around 2200rpm when given some - cruising at 70ish on a flatish road and it sits at about 200kPa, but does vary depending on the roads.Mark.
2006, D3 SE Auto - gone but not forgotten.
2014 BMW 530d M Sport Tourer.
1977 Triumph Spitfire 1500
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Disco Picture Website Here
Just a pity the live torque reading never reads above 404Nm with any diagnostic kit. That could be interesting
I suspect that is due to the torque being a calculated value based on revs and throttle etc and taken through a lookup table to give the torque value. Reasonable given the standard design, but not a lot of use if you tune the engine Mark.
2006, D3 SE Auto - gone but not forgotten.
2014 BMW 530d M Sport Tourer.
1977 Triumph Spitfire 1500
_________________________________________________
Disco Picture Website Here
11th Mar 2014 10:46 pm
John P
Member Since: 12 Aug 2011
Location: West Sussex
Posts: 1278
Can a MSV2 give these live readings as well. I'm feeling left out here.
Need to get the MSV2 out and have a play.
Cheers
John
11th Mar 2014 10:48 pm
Woolmeister
Member Since: 26 Mar 2007
Location: Chandler's Ford
Posts: 3459
@Alex: Thank you. So, if I had displayed Barometric Pressure alongside Manifold Input Pressure, you would expect those values to be roughly equal at idle?
@Mike: It is a very cool thing to play with isn't it?. 8) Have not found live torque reading yet. Only available on an auto?
@Mark: I can see I'm going to need a bigger intercooler at this rate...
Steve2021 BMW iX3 Premier Edition in Carbon Black ⚡️🔌
2019 Škoda Kodiaq 2.0 Tdi 190 DSG Sportline in Quartz Grey. Excellent vehicle. Gone.
2017 Discovery Sport HSE Auto in Carpathian Grey and Ebony Leather. Modern JLR Junk. Gone.
2007 Discovery 3 TDV6 S Manual in Zermatt Silver with Ebony Cloth (143k) Gone, but now patrolling the Asia section of the West Midlands Safari Park!
11th Mar 2014 10:49 pm
Fifth Horseman
Member Since: 23 Oct 2012
Location: Lanarkshire
Posts: 217
IIRC with the MSV you can view virtually every input value.
On a related note, can anyone give an idea what the typical normal range for cylinder balance offset is?
11th Mar 2014 10:54 pm
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20793
I have it plugged in when I am driving, just to have some known good "logs" to compare with other cars
It is interesting to see just what is actually happening as you replay the journey, especially wheel speeds, and suspension heights
The MSV can also display live data, but only in numerical form. The IID is graphs 8)
Cylinder balancing should all be 1000, if the engine is running 100%, which would never happen in the real world. Realistic values are between 950-1050 My D3 Build Thread
The live values that interest me at the moment are the 4 solenoid valves on the auto box and the TC lockup status. I don't see much happening on the valves - one or 2 change state occasionally, but can't work out exactly what they are doing!Mark.
2006, D3 SE Auto - gone but not forgotten.
2014 BMW 530d M Sport Tourer.
1977 Triumph Spitfire 1500
_________________________________________________
Disco Picture Website Here
11th Mar 2014 11:01 pm
Fifth Horseman
Member Since: 23 Oct 2012
Location: Lanarkshire
Posts: 217
Disco_Mikey wrote:
Cylinder balancing should all be 1000, if the engine is running 100%, which would never happen in the real world. Realistic values are between 950-1050
Thanks for that, think I need to keep an eye on mine as ISTR one was around 850.
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Wow. Have to say, the guys over at GAP Diagnostic are doing an amazing job on this. 8)
Just monitoring a few TDV6 Engine values on my commute home this evening has prompted me to try and find out a little more about what goes on under the bonnet of my D3 TDV6.
You would not be wrong!
