94 volvo 850 tacho not working

jim4270 · Post by **jim4270** » 02 Jun 2014, 23:29

hey guy's, I have a 94 Volvo 850 gle and I have a problem with the instrument cluster the rev counter doesn't work I replaced this dash with another one and still no rev counter! does any one know what the problem could be ? every thing else works great bar this one thing.

Post by **Ozark Lee** » 03 Jun 2014, 08:25

Given that the problem remains with another cluster then chances are it is a wiring problem. The tachometer signal comes from the ECU on a White/Black wire so you will need to trace the wire back and look for a place where it has been cut or the insulation has been scraped off.

The schematics can be found here:

http://www.volvowiringdiagrams.com/?dir=

...Lee

jim4270 · Post by **jim4270** » 03 Jun 2014, 17:02

thank you very much I will check this today, regards jim