Today's Quiz - why does my speedo not go

[skidz 196]

So, have reassembled my E30 Baur, 325 etc and the speedo has stopped working. have tried different clusters, fuse, checked the plug at the diff. Any ideas?

[E30 325i Rag-Top 2915]

Is it the speed reading that has stopped working (the needle), or the mileage (odometer)?

[skidz 196]

Is it the speed reading that has stopped working (the needle), or the mileage (odometer)?

Both have stopped, but the other guages work (fuel, temp, lights etc)

[Guest Si Vis Pacem]

Both have stopped, but the other guages work (fuel, temp, lights etc)

Check the little drive cog inside the speedo mechanism. It's about 4mm in diameter and made out of a rubbery-plastic that gets very brittle with age; I've seen many that have crumbled away in varying degrees. You can carefully prise them off and replace with a good one if need be.

Cheers

Ken.

"have tried different clusters" I missed this, ignore me!

Edited November 26, 2010 by Si Vis Pacem

[skidz 196]

Check the little drive cog inside the speedo mechanism. It's about 4mm in diameter and made out of a rubbery-plastic that gets very brittle with age; I've seen many that have crumbled away in varying degrees. You can carefully prise them off and replace with a good one if need be.

Cheers

Ken.

"have tried different clusters" I missed this, ignore me!

All seems a bit weird, I am wondering if there is an earth wire from the loom to the body I think it attaches near the ecu - I will check tonight

[Guest Si Vis Pacem]

All seems a bit weird, I am wondering if there is an earth wire from the loom to the body I think it attaches near the ecu - I will check tonight

Progress? Did Price pull finger and offer to help?

[skidz 196]

Progress? Did Price pull finger and offer to help?

No progress, car is off having new exhaust made (last job before warrant check) Mr P may well have offered, even if he doesn't know it yet. Can only be the sender unit at the diff (I have a spare to try) or a broken wire - tried everything else!