Auto-Forums.net

[Gabriel Ditu]

Hi,

I'm from Australia, so this car may have been sold as a different model
in other countries.

My problem is that most of the time the temperature gauge on the Pulsar
(Vector GL, 1.6L throttle body injection, 3sp automatic) does not move.
Every now and then it works fine, but for the most part it does not
indicate anything.

Here is a little more information:

* the fan cames on as normal when the temperature goes up, so I know
that a correct temperature reading comes from somewhere

* I checked the diagnostic function on the onboard computer and it
reports no faults, the ECM light does not come on, I know that it
should detect both voltage low and voltage high conditions, but the
voltage seems OK

* I have installed a new radiator and thermostat a few months ago and I
checked that all the hoses are in order and that there is plenty of
coolant in the system

Could someone please suggest a course of action from here? In
particular how many temperature sensors are there and where are they
located? How would I go about testing the sensors and the gauge?

I have a workshop manual complete with wiring diagrams and the like and
I am not afraid to tinker myself. I have taken the instrument cluster
out a cople of times already to change the bulbs. Unfortunately this
manual is very scarce in detail when it comes to specific electronic
components and rather focuses on mechanical problems.

Any help would be greatly appreciated! I am a student and can scarcely
afford to pay an auto electrician a few hours' labour.

Cheers,
Gabriel.

[JM]

"Gabriel Ditu" wrote in message
news:<1132285575.174441.308260@g49g2000cwa.googlegroups.com>...