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Oil Pressure Sender -glorified switch or true analog unit?

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Old Jul 23, 2007 | 01:20 PM
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Oil Pressure Sender -glorified switch or true analog unit?
Is it a true analog output, or a simple digital on/off switch? It only has 1 wire . . .
I'm trying to log oil pressure with an aftermarket ECU and would like to avoid using multiple sender units if possible.
Last edited by CMonakar; Jul 23, 2007 at 01:28 PM.
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Old Jul 23, 2007 | 01:29 PM
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i've seen people rip out the stock gauge and then modify the dash cluster to have an aftermarket one...

does anyone have a link?
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Old Jul 23, 2007 | 01:32 PM
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Analog output.
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Old Jul 23, 2007 | 01:32 PM
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You could always attach a volt meter to it and see what the voltage is as you sit at idle, and then rev up to 3000 RPMs.

But I'm sure it's the gauge that's more like a 3 stage switch!
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Old Jul 23, 2007 | 01:58 PM
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i have an autometer gauge with the sender in a respeed oil filter pedestal. the readings are very similar to the stock gauge.
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Old Jul 23, 2007 | 07:22 PM
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The number of wires is irrelevant, it's analog.

btw, chassis ground acts as the signal return line --> good grounds are critical for all 1-wire sensors.
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