Temperamental speedo and fuel gauges

[e30veg]

I got temperamental speedo and fuel gauges (325i). I’m aware of wiki , but want other experiences of best method before I decided . Replace whole clocks, troubleshoot the causes etc . I’m novice but not afraid to get stuck in. Thanks

[BenHar]

What are the symptoms?
What year is it?

Ben

[e30veg]

89’ G , working then died then back alive again .Suspect wiring or speed sensor?

[flybynite]

It is a bit of a process of elimination, no harm in checking the diff connections but my guess is a dry solder joint or corrosion on the PCB / bad earth. There was a thread a while back, someone with the same problem and was a dry joint.

You could get new clocks but that's opening a can of worms of getting a better one even if you do get a matching set.

If I find the thread I'll post a link

Edit: Here you go, might give you some ideas

viewtopic.php?f=2&t=280053&p=2971747&hi ... r#p2971747

[e30veg]

Brilliant thanks. I will look into that route .