Audi 100 speedo

[pimpdriver]

Right, I had the usual "jumping speedo" problem. I followed these instructions:

http://www.audifans.net/modules.php?...ewtopic&t=2391

and tried to fix it, now the speedo doesn't work at all.........







The "fix" is to remove the green "jumpers" and clean up the pins, which I did. Now it doesn't work.

What is the purpose of the pins and jumpers?

Can I just solder the two pins together? As the green jumpers don't (since I touched them) join the two pins........

Got until Monday to rectify the problem!

[pimpdriver]

anybody going to say "go ahead and SOLDER THOSE WIRES".

Make the flux capacitor glow orange young man.

I have a soldering iron, and I know where to stick it!

So when Mrs PD is out of bed (illness running thru our house right now), I'll whip the dash out and try it out.

[pimpdriver]

I soldered the wires, speedo still doesn't work.

All of the other gauges do though.

I reckon those jumpers may be for if you have cruise control or something

[TheTwelveQuidKid]

On mine, the speedo jumps about and won't read over 60, and the temp guage only works once in a while. I've had the whole thing apart twice, checked all the connections and still had no luck with it. Occasionally the green indicator bulbs on the dash interact with the speedo illumination and the blue one for main beam. Bad earth somewhere ? If it is, fcuked if I can find it.
Another thought. What if it's the drive pinion in the diff. I don't know if Audi 100s have one seeing as they're electronic. Or speed sensor.

[pimpdriver]

Originally Posted by TheTwelveQuidKid

On mine, the speedo jumps about and won't read over 60, and the temp guage only works once in a while. I've had the whole thing apart twice, checked all the connections and still had no luck with it. Occasionally the green indicator bulbs on the dash interact with the speedo illumination and the blue one for main beam. Bad earth somewhere ? If it is, fcuked if I can find it.
Another thought. What if it's the drive pinion in the diff. I don't know if Audi 100s have one seeing as they're electronic. Or speed sensor.

Mine does the "indicator bulbs and main beam" too. Usually after 30 minutes driving.

Will put the soldering iron on the connections next week.

[pimpdriver]

Sorted it today. The pins should NOT be soldered together, the green "jumpers" are actually "female sockets" to plug the speedo into when fitting it.

When I removed them, I ripped them off the PCB, so today I used some phone wire and joined the pins to the PCB.

Problem solved.

I also sprayed the board and plugs / sockets with Servisol switch cleaner, hopefully it will cure the "glowing indicator bulb" problem.

Cheers

Steve