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YOUR RESEARCHHow accurate is the 996.1 coolant temperature gauge?
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Replace scaling so
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Suggestion · Original poster
I'm now hatching a plan to change the scaling so that it reads better.
How accurate is the 996.1 coolant temperature gauge?
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Leading evidence: 'Replace scaling so' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace scaling so' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
Obviously an Ntc is a set resistance at set temps so the gauge must be dampening for want of a better word the output on the temp gauge .
How accurate is the 996.1 coolant temperature gauge?
Set temps im afraid
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Suggestion
Ive searched but have not found a graph of the ntc resistances at set temps im afraid ..
How accurate is the 996.1 coolant temperature gauge?
Set temps so the gauge must be dampening
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Suggestion
Obviously an Ntc is a set resistance at set temps so the gauge must be dampening for want of a better word the output on the temp gauge .
How accurate is the 996.1 coolant temperature gauge?
Use seperate temp gauge
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Suggestion
If you cant bypass this effect then you would need to use a seperate temp gauge .
How accurate is the 996.1 coolant temperature gauge?
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Not very......
It isn't even clear to me what the indicators on there are supposed to be. the 80 is clear, but I would have thought it was from left to right maybe:
40, 60, 80, 100, 120. But it seems not.
I'm now hatching a plan to change the scaling so that it reads better.
MC
Yes Terry, but it doesn't tell me what I wanted to know. This is part of a plan to convert my instruments to show either coolant or oil temperature. First part was to understand how the actual coolant temperature corresponded with sensor voltage, and what voltages are required to get the pointer to various places. Next stage is the oil temperature part.
MC
Ive searched but have not found a graph of the ntc resistances at set temps im afraid ..
The only base line one i found for a 996 is approx 1K at 20 degrees.
Image below is all Porsche say on these sensors and its pretty generic.
What i can say .. i look at a tester for the temp value .. i see the gauge read 80 at about 75 .. i see the gauge read 80 at about 85 .. give or take.
My thinking is Porsche dont want owners worrying about small deviations in temp so they hold it at 80 on the gauge.
Obviously an Ntc is a set resistance at set temps so the gauge must be dampening for want of a better word the output on the temp gauge .
If you cant bypass this effect then you would need to use a seperate temp gauge .
We dont get taught this stuff so its just guess work on my behalf though .
I don't want a digital gauge, I want the analogue one to accurately reflect the coolant temperature. Now that I know the parameters for the standard sensor I can do this, along with enabling it to switch to show oil temperature on demand.
MC
