Quote:
Originally Posted by darrin
spuggy -- do those both register the same resistance values as the one used by our Carreras?
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Response curve of a temperature sensor is dictated by the semi-conductor technology used. Bosch NTC temp sensors all have the same response curve (there's only the one datasheet).
So all you're left with are wiring/connector issues. A 2-wire sensor is better, as the older 1-wire design sometimes had connectivity/grounding issues via the head.
Magneti Marelli, by way of illustration, use a slightly different technology for their sensors. Similar, but different, temperature curve. In practice, I doubt it would cause any issue anyway (because I'm guessing the Motronic just regards <65C as "cold" and > 65C as "hot") - but to give you an idea, the different curve on an MM sensor (if there were one physically suitable for a 3.2) would result in ~10 degrees of error at the very extremes of the scale - like at -40C. The two different curves coincide somewhere around 110C, IIRC. Like, meh, no biggie.
I only know about the MM sensor because Italian vehicles tend to use them; the one for my Monster is stupidly, not-even-funny expensive in a Ducati box, as opposed to buying the same sensor for a Fiat Panda or a Land Rover, or whatever the equivalent was... My issue with the Ducati turned out to be something else entirely - but I pretty much concluded that any Bosch sensor that physically fitted would be "close enough" for practical purposes.