rev counter needle has a mind of its own occasionaly

[gary dw 10]

been happening a while now, occasionaly the rev counter needle will drop right down to nothing while cruising along or will go excessively high. fixed by a liitle love tap on the dash but getting a bit anoying now. any ideas on how to cure the problem. it isnt a constant problam but when it happens it will hang around a while unless i tap on top of the dash area. thanks

[owen g60 10]

What model do you have??

 

Some speedos are vacuum fed and early ones are mechanical.

 

My first thing to check would be the connections on the back of the clocks

[gary dw 10]

its a 95 vr6. that was my first thought about a faulty wire but before i went pulling it apart i thought id ask :bonk:

[SamG40 0]

Just reach up and push the connector in on the back of the clocks in. The loom plug goes in on the left hand side as you look at the clusters. Not sure if you have to take of the lower shelf to reach it.