1991 940 Yazaki odometer repair

Ian Fife · Oct 28th, 2010, 12:52

my 940 Yazaki odometer stopped working after 200k came up, and this seems to be a common failure. I followed the USA guide and replaced all the capacitors on the pcb but this did not cure the fault - speedo works fine but odometer and trip odometer don't move. Has anyone got any advice on substituting a different speedo head (s/h Yazaki speedos seem to be unavailable due to this common failure) or a recommendation on where I can get a reliable, professional repair job done?

Thanks
Ian F.

V-Jet · Oct 28th, 2010, 21:06

If you really need one I have one for sale although I am in New Zealand and it's in kilometres not miles.
http://cgi.ebay.com/ebaymotors/ws/eB...T#ht_500wt_975

From your description however I think the plastic gear inside your speedometer has cracked, you can take it to an instrument specialist & get the plastic gear replaced. Faulty capacitors on the PCB usually cause the opposite symptoms - speedometer not working but odometer & trip meter still works.

Ian Fife · Oct 29th, 2010, 15:55

OK, thanks for this, pity you are about as far away as is possible! I think I will have another look inside the head and see if I can spot any broken gears, thanks for the advice,

Ian F

Oct 28th, 2010, 12:52	#1
Ian Fife Senior Member Last Online: Today 12:41 Join Date: Jan 2006 Location: Inverkeithing	1991 940 Yazaki odometer repair my 940 Yazaki odometer stopped working after 200k came up, and this seems to be a common failure. I followed the USA guide and replaced all the capacitors on the pcb but this did not cure the fault - speedo works fine but odometer and trip odometer don't move. Has anyone got any advice on substituting a different speedo head (s/h Yazaki speedos seem to be unavailable due to this common failure) or a recommendation on where I can get a reliable, professional repair job done? Thanks Ian F.

Oct 28th, 2010, 21:06	#2
V-Jet Member Last Online: Jan 15th, 2024 02:57 Join Date: Jun 2010 Location: Melbourne, Australia	If you really need one I have one for sale although I am in New Zealand and it's in kilometres not miles. http://cgi.ebay.com/ebaymotors/ws/eB...T#ht_500wt_975 From your description however I think the plastic gear inside your speedometer has cracked, you can take it to an instrument specialist & get the plastic gear replaced. Faulty capacitors on the PCB usually cause the opposite symptoms - speedometer not working but odometer & trip meter still works.

Oct 29th, 2010, 15:55	#3
Ian Fife Senior Member Last Online: Today 12:41 Join Date: Jan 2006 Location: Inverkeithing	OK, thanks for this, pity you are about as far away as is possible! I think I will have another look inside the head and see if I can spot any broken gears, thanks for the advice, Ian F

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