Maybe you guys could help me (speedo related)

[nick_t]

So my e30's been in the family for several years now, was my brother's, now its mine, and about a month after my brother bought it the speedo and ODO crapped out on him. Everything else in the cluster works besides those two. Now that I'm driving it, the whole not knowing how fast you're going thing is starting to bug me, not to mention the local NJ inspection station failed me because the ODO didn't change between my two visits to that wonderful place, so I started on the adventure of fixing an e30 speedometer. So far the whole cluster, SI board, trigger switch sensor, trigger switch plug, and differential have all been replaced. What else could it be? I'm really hoping it's something simple and not expensive, too.


Thanks
Nick

[Nicademus]

So my e30's been in the family for several years now, was my brother's, now its mine, and about a month after my brother bought it the speedo and ODO crapped out on him. Everything else in the cluster works besides those two. Now that I'm driving it, the whole not knowing how fast you're going thing is starting to bug me, not to mention the local NJ inspection station failed me because the ODO didn't change between my two visits to that wonderful place, so I started on the adventure of fixing an e30 speedometer. So far the whole cluster, SI board, trigger switch sensor, trigger switch plug, and differential have all been replaced. What else could it be? I'm really hoping it's something simple and not expensive, too.


Thanks
Nick

I have the same problem. I've just decided that my best guesstimate on speed has worked thus far soooo.......actually it is kinda annoying but worst of all my windows don't work.

[jlevie]

Since you replaced all of the components (cluster and speed sensor), the most likely cause is now a wiring fault. You'll need to check for continuity and no grounds from the speed sensor to the cluster.