Car is 95 DX hatch with eg6 cluster

Engine is OBD1 B18B1, using full obd1 harness.

OBD1 P75 ECU.


No Check engine lights


Swapped the VSS out with 2 other ones known to work, no difference.

Swapped the plugs at the VSS with 2 others (Soldered)

Tested the signal wire to ground, got +5v

Tested the ground wire for continuity, which it has.

Tested the power wire to ground wire for +12v, it is present.


The speedo needle would twitch a little bit once you got above 80 kmh, tonight i noticed it looked to not be working at all, but it was really wrapped all the way around to the stop.


When the key is off, it rests in the blank area of the speedo, when you turn the key it jumps immediately to the needle stop, when you drive it doesnt move at all, when you turn the key back off, it drops back into the blank area and stays there.


Video to show what I mean: Quality is very bad but you can see the needle and the area it rests (well past the last 180KMH mark) and it jumps and hits the needle stop when the key is turned to the ON position.
http://www.youtube.com/watch?v=CnJQrh5zVPQ



Is there any other tests i can do to see if its a problem with the wire going to the cluster plugs, or is it safe to say the speedo is broken itself?



Thanks in advance.

 

I have a similar problem but not that drastic.. While cruising my speedo needle will jump and move some times... I believe it is a ground issue

 

Thats what mine has been doing for awhile, then tonight im leaving my house and just happen to look down and it looks like it was setting on zero, but it was really wrapped completely around almost back to zero..


Makes me wonder if the stop wasnt in the way if it would just be going ape **** in circles lol

 

Sometimes the distributor causes this. Not sure why tho but it happened to me a while back. Try searching around for it