 | Home > Puma (Tdci) > Scangauge Question |
 
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| WelshGas Member Since: 01 Oct 2010 Location: Vale of Glamorgan Posts: 935   
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Where is the Air Temperature sensor positioned that the Scanguauge gets it's information from for displaying the air temperature?
Is it he Ambient Air Temperature or the Air temperature for Air compressed by the Turbo then cooled via the Intercooler?  |
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12th Dec 2010 6:29am |
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| WelshGas Member Since: 01 Oct 2010 Location: Vale of Glamorgan Posts: 935
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Thanks log11. Just wanted to know if the Air Temperature shown was the Ambient Air Temperature or the Engine Air Temperature.
If as you say it comes from the MAF sensor then it would relate to the Ambient Air Temperature.  |
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12th Dec 2010 10:17am |
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| 60North110 Member Since: 11 Oct 2010 Location: Shetland Posts: 13 
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From The Scan Gauge II Manual
FIA / CIA Intake-Air-Temperature Temperature of the air going into the engine. At highway speeds, this will typically be a few degrees higher than the outside air temperature. At idle or low speed, it may be much higher in temperature than the outside temperature due to the low air-flow into the engine and the high under-hood temperatures warming it up. A quick experiment today - external thermometer showed an air temp of 8 degrees C, started Puma and Scanguage showed CIA at 8 degrees. Set off and got to speeds of upto 50mph and the Scanguage showed temps of 7 or 8 degrees, so was a good indicator of Outside Ambient Air Temp. Hope this helps ! |
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12th Dec 2010 3:02pm |
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| WelshGas Member Since: 01 Oct 2010 Location: Vale of Glamorgan Posts: 935
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Thanks 60North110.
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12th Dec 2010 4:08pm |
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| shingwell Member Since: 13 Mar 2009 Location: herefordshire Posts: 45 
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I too have found the air intake temp a good indication of outside air temp as long as you have been going along at a reasonable speed for a few mins. Once you stop, the air intake air heats up from the engine heat so the scanguage reading goes up, but goes down again once you start moving again
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14th Dec 2010 1:29pm |
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| yaho Member Since: 26 Nov 2008 Location: Bialystok Posts: 200  
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I have realised the SG readings are accurate too. We have here down to -20C now (north Poland) and SG is more accurate than external thermometer (sensor in front, close to the headlamp). When standing, both are going up.
Next year I will check what happens in 30+ temperatures and if SG will be as accurate as now, I will remove the external thermometer at all, in favour of place for other switches. Janusz www.yahodeville.com |
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15th Dec 2010 7:37am |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610 
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My Scangauge air intake temperature is spot on too as an accurate indication in comparison to local radio temperature broadcasts and my other half's Citroen indications!
If you go through life with your head in the sand....all people will see is an ar5e!!
Treat every day as if it is your last....one day you will be right!! |
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16th Dec 2010 10:15am |
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| dilukabey Member Since: 17 May 2011 Location: Sri Lanka Posts: 173 
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My mates 110 SW has both ABS and TC light on and borrowed my scanguage and scanned for DTC but niether pending nor logged fault codes found. When it done 'force clear' it says 'no respons'.
So really a scanguage can detect any TC and ABS related faults and clear them up? |
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14th Oct 2011 3:08am |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
The scangauge reports on sensor inputs within the Diesel EMS module. To read/clear faults to do with ABS/TC you need a diagnostic tool that can read the Wabco ECU like a hawkeye, nanocom, MSV2 etc.
Brian. |
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14th Oct 2011 11:59am |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731  
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Going briefly off-topic (apologies to all) but still talking temperatures, do you have any significant problems starting at -20C, e.g. sticky gearbox, transmission brake etc. I am a "new" Puma owner in Munich and want to know what to expect in the coming months 
Cheers Matt Tell someone you love them today because life is short. But shout it at them in German because life is also terrifying and confusing... |
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14th Oct 2011 12:11pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
^^^^^^^^^Nope, none at all in the last 2 years I've had the Puma
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14th Oct 2011 12:33pm |
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