Outside temp sensor has never worked since i owned the car, it always read -10, i recently removed the stereo to have a look at a heater control panel bulb (on order) and replace the headunit at the same time, found the ground wire had come out of the audio wiring harness ! Must have been like that since the old stereo was fitted as it was not easy to get back in, don't think it could have fallen out, since putting it back my temp sensor is showing a different temp, this morning it was reading a plausible +10 but it gradually went down to about -10 and the needle is constantly quivering, i was considering ordering a sensor, quoted £130 from dealer, but now im not sure, could it be wiring or even the gauge ? Any similar experiences here ?
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Outside / ambient temperature sensor
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