Just thought id post up what I did today, as iv noticed a few people replaced the sensor like I did and are/were still expiriencing problems.
I fitted the new sensor last week, I did it the short way by cutting the cabling inside the wingmirror.
I was still getting fluctuating temperatures from -30 to +40c.
When I fitted the sensor, I noticed the black wire was pretty brittle, and the copper cable inside had gone black... which usually means the wire is burnt.
I thought id get away with it because for most applications the wire would still be usable, but for a sensor that works on tight resistance variables, it wasnt reliable at all... thus fluctuating the readings still.
The only way round this is to replace the wiring for the sensor.
I removed the door card (see the
guide on the main site), and removed the wingmirror.
I cut the black and brown wires before the plug to the wingmirror inside the door.
Solderd a new black and brown wire, fed it up the door, through into the wingmirror housing and then solderd onto the sensor.
Powerd the headunit back up, was reading -30 but rapidly rose to +11 degrees, where it stabalised.
Re-fitted the wingmirror housing and doorcard.
Thats another thing off the list with the new car, there were quite a few little things broken like the temp sensor, but im abit of a perfectionist and iv GOT to have everything working, its quite good aswell because im learning things rapidly about the
ibiza.
Iv sorted about 10things so far, only thing left is to sort the rubbing from the steering wheel, and the bodywork (needs a full spray, but wont be for a few months)