Vectra C temperature sensor

[lukeykookey]

My outside temp is reading -30 or something stupid.

Will this be the outside temp sensor?
Where are they on the Vectra C?
Is it possible to test them? I know they are only a fiver on flea bay but if it aint broke....

[chris993]

yea it'll be the sensor, they're in the front bumper/lower grille, 1 of the 2

[lukeykookey]

Cheers for the reply. So can you fix them or test them?

Or will I just need to get a new part?

[chris993]

to be honest i have never tried testing them as its always been the sensor, and they are a sealed unit so very doubtful its repairable, best of putting a new 1 in mate

[lukeykookey]

Had it in the shop, fault code showed sensor circuit.
Replaced sensor.
**** all.

So what else can it be? A short? HEEEEEEEEEEELLLLLLLLP!

It cost me £60 for the diagnosis, £2.50 for the sensor, and I'm no better for it.

[chris993]

£2.50 for the sensor, thats cheap, ours r about £15!!! errrm, only thing left is the wiring to the sensor its self, shouldn't be too hard to trace back as there's only 2 wires.
theres bound to be a fuse 4 it, has that been checked?

[lukeykookey]

Not sure...

Is it easy to change the wiring to the sensor?

I assume fuse is OK because there is 'a' reading.

Today, however, it did say

c

F

Where it would usually have a number.

[king nero]

it won't be the LCD display that's broke, would it?

[lukeykookey]

No, it shouldn't be, its working fine in all other areas, today it was back to minus 35 degrees. Should I get another new sensor and replace the wiring on it?

Thoughts?

[johnsav]

i reckon youve got some dodgy wiring mate. these sensors work on varying resistance to give you a reading. a dodgy connection or even a dodgy earth could be messing the resistivity of the circuit. if you know how to use a multimeter get busy!!