View Single Post
  #3 (permalink)  
Old 05-12-2008, 04:54 AM
Tassie_328i Tassie_328i is offline
Master License
 
Join Date: Jul 2005
Location: Tas, Australia
Rides:BMW 328i 1996
Region: Australia
Posts: 282
Tassie_328i is a New Registered Member
How did you get the buttons jammed Harls?

Still no joy with the temperature sensor?? that's been an ongoing problem for you!

Dont know if this helps you or not but....

My sensor was reading 15degC in the garage (getting a bit chilly here), so taking it off the car the resistance of the sensor was about 7000 ohms.

Warming the sensor resulted in a decrease in resistance. Its quite reactive to temperature change.

So hopefully if you've got a multimeter you can test if your sensor is faulty.

After turning on my ignition without the sensor plugged in i got the -37d C on the obc and i could only get rid of this (after plugging in the sensor) by unplugging both of the looms out of the back of the obc (counting to ten) and plugging it back in, after which the correct temp was displayed.

So my theory.... (if your sensor isn't faulty)
temp increase = resistance decrease therefore
temp decrase = resistance increase
open circuit would be read as extreme resistance and therefore displayed as the lowest temperature it can (ie -37)

So to cut a long story short i reckon you've got an broken wire somewhere in there if your replacement sensor isn't faulty. Time to do some wire tracing.
__________________
Reply With Quote