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Old 27-05-2015, 05:04 PM
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Default Faulty Outside Temperature Gauge

Afternoon Chaps,

No doubt this has been covered but i have a intermittent fault with my Outside Temp Gauge. It will occasionally jump around and won’t seem to go over 10 Deg.

Now i know i leave in the north of England but the sun does come out every now and again with temps higher than 10deg

Is it likely to be the gauge/wiring/sensor in the rear arch ?

Cheers

Adz
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Old 27-05-2015, 05:40 PM
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You could first try giving the sensor a clean/wire brush as they can get rusty and are very expensive to replace. The sensor is in the drivers rear wheel arch below the petrol filler.
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Old 27-05-2015, 05:40 PM
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Old 27-05-2015, 05:47 PM
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Also check the contacts in the connector. The connector is prone to moisture ingress that corrodes the contacts and gives spurious readings - I suspect that's where your problem is Adz. Give them a clean and you should be sorted
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Old 28-05-2015, 10:08 AM
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Cheers gents will give it a go at the weekend.
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Old 29-05-2015, 07:21 AM
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Mine hasn't worked since I bought the car, so this thread has reminded me to tackle it and check those connectors.
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Old 17-06-2015, 04:33 PM
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Stripped mine today as it had been erratic since I bought the car, as I suspected the contacts were corroded.... A quick clean with contact cleaner and emery paper and it's working perfectly.
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Old 17-06-2015, 06:03 PM
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Quote:
Originally Posted by Dave P View Post
You could first try giving the sensor a clean/wire brush as they can get rusty and are very expensive to replace. The sensor is in the drivers rear wheel arch below the petrol filler.
Mine (8/99 S50) is in the o/s front corner - beneath the headlight unit.
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Old 17-06-2015, 06:12 PM
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Quote:
Originally Posted by FEP View Post
Mine (8/99 S50) is in the o/s front corner - beneath the headlight unit.
There is a thermal switch for the headlight washers located at the front but the sensor for the temperature as standard is in the rear offside wheel arch
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Old 17-06-2015, 06:27 PM
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Quote:
Originally Posted by Dave P View Post
There is a thermal switch for the headlight washers located at the front but the sensor for the temperature as standard is in the rear offside wheel arch
Curious. I have no headlamp washers, but I do have a sensor (same as in your picture) underneath the o/s headlamp.

Now to be fair, the gauge does not work! The selling dealer fitted a new sensor (at as you say, not inconsiderable cost) and I presumed that he had some idea what he was doing. I had assumed that the problem was dodgy connections behind the gauge.
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