Weird problem with temp gauge and speedo

[e30newbie]

Hi guys,

After replacing the speed sensor wire, the speedo was working perfectly for more than 2 month.

Now it seems to have a new problem, when the speedo start the dancing routine (up and down), the temp gauge will do the same but not as dramatically. It doesn't happen all the time.

You guys think its related to the cluster because I don't see how the speed sensor wires have anything to do with the temp gauge.

Cheers

[spp320i]

Best to get the cluster out I think mate - it's either the brass screws or the SI batteries as above.

[e30newbie]

Ah ok, if it is the SI batteries fault, is it changeable ?

[e30newbie]

So the si batteries can affect speedometer ?

[e30newbie]

Thanks willnz

I will open it up tomorrow and check it out. lol i just realise we are neighbours lol you in kiwi land hehe.

[poolnoodle]

lol i just realise we are neighbours

Hey neighbours
Think I got a spare SI board, e30newbie. Which SI board do you have - 1 or 3 reds?
Let me know if yours is buggered.

[e30newbie]

Hey neighbours
Think I got a spare SI board, e30newbie. Which SI board do you have - 1 or 3 reds?
Let me know if yours is buggered.

1 or 3 reds ??? I have no idea mate. I haven't had time to open it up yet.

[poolnoodle]

Like he said.
The cluster I have is an earlier one with 3 red lights. They aren't interchangeable. Not many of the early ones seemed to have survived. I got a recon unit US eBay that works well, came guarenteed for about AUS$60 posted