95 speedometer problem

[novarider2]

I'm having a speedometer problem on my 95 240sx. It will be working fine and I come to a stop at a light and when I start moving again it no longer works or it suddenly jumps to life at the wrong speed. I can tap on the plastic cover of the cluster and it will work properly again. This is happening more frequently so I need to fix this. I have never tore into a 240sx dash. Is there a guide somewhere on how to remove the cluster? I'm hoping it's a loose connection. If it's not a connection can just the speedo itself be replaced or do I have to replace the entire cluster?

[Dimitri]

Mine started "speeding up" all by itself. With the car (1990 manual) stationary, only Accessories on, within a couple of minutes the needle is at 85 MPH.
Haven't taken a crack at it yet.

[The Inflicted]

Same year model, same problems, though I've found mine can be temporarily resolved by pushing in or pulling back on the trip odometer reset stalk. This tells me it's probably a case of something in the flexible PCB pad behind the instruments not making good contact. I had a look at mine when I upgraded to LED instrument lights and couldn't see anything wrong. When everything was put back together, the problem was neither better nor worse.

[essfourteen]

You can change out just the speedo part of the cluster, yes.

Search S14 cluster removal in google . You should find something no problemo.

[lenso]

probably your vehicle speed sensor (VSS) on the transmission.

[novarider2]

Don't think it's anything on the transmission as smacking the dash or just wiggling the trip odometer button thing fixes it.

Essfourteen I have not found just the speedo part anywhere, maybe your googlefu is better than mine can you post a link please?

I found how to remove the cluster but can't find A new replacement for the speedo.

[essfourteen]

Its unlikely you'll find just a speedometer. You're probably going to have to buy an entire cluster.

And my google comment was about finding out how to remove the cluster from the dash.

[Lazarus13]

The cluster is very simple to take out all you need is a Phillips head screw driver and a pocket flat head screw driver to get the plugs disconnected. You can just replace the speedometer I have just replaced my tach. You might check other models because I replaced my tach circuit board with a 93 Altima tach circuit board. I don't know how to change mileage yet. Make sure you check your vss I know it sends single to the ECU then the ECU sends signal to the speedometer. There are plenty of service manuals with step by step diagnostics on this website.