Crazy speedometer???

my boy just swapped a C1 in his EK hatch and now the speedometer has just gone nuts!! everything else works fine in his cluster. it kind of jumps from time to time especially when the engine is revved-up or when vtec engages. even at idle it could bounce from 0-40-60-0-20 etc. its not something consistent but its annoying and the speedo has become undependable. Anybody ever experienced this or know what it could be and what can be done about it??

I think it can be re-wound, by a professional. But im not positive. Might be your best bet to buy a new gauge cluster off ebay or a junkyard.
Could be your connectors in the back loose to. Happened to me before, but didnt bounce from 0 -40 - 60 - 0 - 20. It just moved maybe 2 or 3 mph

yea, could be the speedo cable. the speedometer is not usually the cause. check to make sure the speedo cable is connected properly on the tranny and behind the cluster.

already swapped another cluster and still doing the same thing.

i swaped out my clust a bit ago and i thought that was the prob. i figured out that for some reason the speedo cable is what is causing it to jump in between 0-10mph. i could get a new cable but too lazy.

actually EKs dont have speedo cable! they have a speed sensor(electric) geez! dont know why this slipped my eye! it looks secure in there, just have to find another one and see if it works before I buy a new one.