Quote:
Originally Posted by Maxbumpo
Zulfiqar,
Do you know the sensor resistance values, or are they published in MB literature?
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they are published in the literature.
they are the same values as the pre glow temperature sensor, there are two pins, each pin is a separate sensor referenced to ground of the cylinder head.
20C = 2.5 kohms
30C = 1.7 kohms
40C = 1.1 kohms
50C = 830 ohms
60C = 600 ohms
70C = 435 ohms
80C = 325 ohms
90C = 245 ohms
100C = 185 ohms.
so you can deduce from here that your gauge going to 120C shows that your wire is shorting to ground somewhere