• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.

Dead Speedo

Dikfrik

G-Wagen Club SA
Joined
Oct 10, 2008
Messages
656
Likes
23
Location
Empangeni, Zululand
#1
After several notices (intermittent failures) since 2015 the speedo on my 290 died on my last Transkei trip - previously i have checked the Hall Sensor on the Tfr box and it is not the culprit - it seems to be the power supply wire to the sensor which have snapped or lost connection. I have checked continuity from the connector to where the wire disappears into the wire harness on the chassis and it is fine - so the break must be further towards the engine - i have the wire diagram showing the black wire (+) going to a 3 pin terminal block marked X12/3 which should be my next check-point. Can anybody direct me to where i can look for this terminal block and what it looks like? Unfortunately i am not well versed in reading wiring diagrams as well but i am trying..
 

Andrew

G-Wagen Club SA
Joined
Oct 8, 2008
Messages
3,368
Likes
291
Location
Brits
#2
Freek, the plug on top of that Hallsensor gets moisture in it and it disagrees with and it causes. Are you sure it is very dry?
 

Dikfrik

G-Wagen Club SA
Joined
Oct 10, 2008
Messages
656
Likes
23
Location
Empangeni, Zululand
#3
Andrew i have checked that one and cleaned properly with switch cleaner. Previously when i checked there was 12V between earth and the black wire as per wire diagram - now dead..
extract instr cluster_speedo.jpg
 

Andrew

G-Wagen Club SA
Joined
Oct 8, 2008
Messages
3,368
Likes
291
Location
Brits
#4
My brother, you are now on your own, charting unknown terror tory. Take paint and mark your route ad DO NOT release the smoke.
 

Dikfrik

G-Wagen Club SA
Joined
Oct 10, 2008
Messages
656
Likes
23
Location
Empangeni, Zululand
#5
Eishhh this thing is jinxed..went to the Game reserve today - speedo worked from start with a few intermittent and short (what i noticed) failures - I just came back and tomorrow i will take it for a quick drive and if still working check if the power is back on the black circuit - if so it must be the culprit - will try and figure out where it goes and where that terminal block is..
Real terror tory - well said Andrew!
 

Antony

G-Wagen Club SA
Joined
Nov 17, 2008
Messages
821
Likes
67
Location
Johannesburg
#6
Good luck Freek. Keep the smoke inside. I’d found a decent VDO instruments service company in Johannesburg but your issue sounds electric and not mechanical.


Sent from my iPhone using Tapatalk