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Premium Member
51 plate Laguna 2 1.6
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Discussion Starter #21
Thanks ours, but this thing "you use for the saucepans" is the bit I don't understand.......what are saucepans? ;)
Sensor was reading OK (garage temperature) today on the computer, I'll clear the fault and see if it comes back. I could be misinterpreting the fault, DDt2000 is a bit cryptic at times.
 

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Super fantastic Mod Technical Supremo Nice Guy
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have got the full latest ddt here, never even opened the software folder.
I downloaded it a couple of weeks ago, think its just shy of 2gb can be integreted with dd4all ( thought about putting my Gendan elm on it )
Heard its not user friendly, AND mainly French, dont do complicated me,..
 

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Premium Member
51 plate Laguna 2 1.6
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2,079 Posts
Discussion Starter #23 (Edited)
have got the full latest ddt here, never even opened the software folder.
I downloaded it a couple of weeks ago, think its just shy of 2gb can be integreted with dd4all ( thought about putting my Gendan elm on it )
Heard its not user friendly, AND mainly French, dont do complicated me,..
It is French, but not much more than schoolboy level, and temperamental, but that could just be me. Happy to talk you through it. Principal virtue- free ;) My favourite price point.
DDT2000Lite is the useful part of it.
 

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Premium Member
51 plate Laguna 2 1.6
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2,079 Posts
Discussion Starter #24 (Edited)
The plot thickens.
Remember I said the water temperature was reading OK? Well just now it read -40C. Right.
Sorted itself out after I deleted the stored fault, but I think I smell a big fat commie rat.
New sensor, right?
Wold it even try to start if it thought the water was at -40?
Cleaning now done, it wasn't very dirty though. That stuff is great for sniffing. o_O
 

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Super fantastic Mod Technical Supremo Nice Guy
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41,059 Posts
Dont like testing coolant temps that way really,
Think its a set parameter that the ECU sees when cold
I tend to start the car, and watch the temp readings on live data ..
If it starts moving pretty sharpish, I leave alone

Not saying yours is not faulty,
But a good indicator is, has fuel consumption gone up..
Will keep ( for better choice of words ) choke on longer
 

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Premium Member
51 plate Laguna 2 1.6
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2,079 Posts
Discussion Starter #27
has fuel consumption gone up..
It certainly hasn't. The live data looks OK, it was just that -40C reading- it went away but if it happened once it could happen again. I was wondering if a bad reading could prevent starting- maybe by making the mixture too rich to fire- is that even possible?
I have the computer in the car so I can see what happens at startup in future.
 

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Super fantastic Mod Technical Supremo Nice Guy
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Would personally ignore it at this point
Yes it will make it hard to start, but think here.
If it was staying cold and not giving the ECU correct reading, your fuel consumption would be suffering ..
As you are not having this, then you can discard temp sensor, and thermostat .
But thats how I look at it,
When was last time sparkys were changed
Or even taken out and checked
 

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Premium Member
51 plate Laguna 2 1.6
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Discussion Starter #29 (Edited)
A couple more data points which confirm what you say.
Unplugging the coolant sensor doesn't prevent starting. The computer just reads -40C- exactly as I noticed once the other day. So will monitor, but not the cause of the non-starting.
I checked the crank sensor, bit of a clean but looked OK, but then decided on a test, I moved it away from the flywheel but left it in circuit. Of course, no start, but interestingly, no smell of fuel either.
Sparkplugs changed a year ago, under 5000 miles on them.
Looking back you chaps had me clean the throttle body after I had a limp-mode problem about 8 years ago. That just went away.
Curiouser and curioser.
 

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Super fantastic Mod Technical Supremo Nice Guy
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No crank signal, no fuel pump running on most cars ( Cats would get ruined if petrol allowed to enter the exhaust system )
But you can have a bad crank signal, and have fuel so not a very good test.
But you can have a good crank signal, and a dodgy fuel pump.
Spark cannot do damage it becomes a wasted spark..

You should be able to see the cranking signal in live data
IF you can get the graph part up,
See if you can find a waveform comparison for your engine
You can then look at what you have, against what it should look like
 

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Premium Member
51 plate Laguna 2 1.6
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2,079 Posts
Discussion Starter #31
No crank signal, no fuel pump running on most cars ( Cats would get ruined if petrol allowed to enter the exhaust system )
But you can have a bad crank signal, and have fuel so not a very good test.
But you can have a good crank signal, and a dodgy fuel pump.
Spark cannot do damage it becomes a wasted spark..

You should be able to see the cranking signal in live data
IF you can get the graph part up,
See if you can find a waveform comparison for your engine
You can then look at what you have, against what it should look like
OIC.
Can't find anything like that, but in any case I've just dropped the laptop with the DDTlite on. No way will I be allowed to borrow another so I'll have to try fixing that first.
 

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Super fantastic Mod Technical Supremo Nice Guy
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Lets not go there..
Still putting software on now
And still struggling
lost my Dialo***s now, that wont work
 

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Premium Member
51 plate Laguna 2 1.6
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2,079 Posts
Discussion Starter #34
We know Ourkid plays football with his laptops but it isn't something you need to learn from him.
I was only trying to get it back in the garage without having to carry it:Dhopefully just the screen and only seem to be £10.99 on ebay so should be back up in a few days if OH stops looking black (her machineo_O)
However we still have an unresolved fault!
 
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