r32 no rev or temp gauge

[skidline32]

hi guys i have a r32 gtst the rev and temp gauges dont work the alt light stays on but its stll charging fine. i have earthed out the temp sender and the gauge dont move. Anny help will be good.thanks

 

[GTSBoy]

You have a fault. The fault will be random. You will need to break out the wiring diagram and the multimeter, and start fault finding. It's a manual exercise.

[skidline32]

20 hours ago, GTSBoy said:

You have a fault. The fault will be random. You will need to break out the wiring diagram and the multimeter, and start fault finding. It's a manual exercise.

Cheers  mate I've just checked every think with muiltmeter. grounds and ign all have what they should but the white and red wire for ign on the black pug its 3.6v is that normal I thought it might be for the light

[GTSBoy]

Well, the tacho is either working and there is just no signal to it, or the gauge itself has a problem. If the latter....god knows what to do. If the former, then you need to a) prove continuity to the appropriate ECU pin and then b) possibly hook up an oscilloscope at the dash end of the wire to see if the signal is present.

The temp gauge is kinda the same just without the oscillosope, you're more looking to see if the resistance of the sensor measures the same at both ends of the wire.

And as for the alt light....that would seem to be a wiring problem. Which may or may not be common with the other problems.

[skidline32]

23 minutes ago, GTSBoy said:

Well, the tacho is either working and there is just no signal to it, or the gauge itself has a problem. If the latter....god knows what to do. If the former, then you need to a) prove continuity to the appropriate ECU pin and then b) possibly hook up an oscilloscope at the dash end of the wire to see if the signal is present.

The temp gauge is kinda the same just without the oscillosope, you're more looking to see if the resistance of the sensor measures the same at both ends of the wire.

And as for the alt light....that would seem to be a wiring problem. Which may or may not be common with the other problems.

Thank you so much for the help I go and try all that and see how I get on.  I thought it might all be because it's a 20det loom in a 25de body. I have tryed 2 clusters it's all the same. But I will give it a Crack im not to keen on have aftermarket rev and temp gaues