Speedo working when it wants.

[E30Martin]

Hello guys, just a quick question - A friend and myself have a 320 but it has the 325 engine, the problem were having is the speedo works when it wants too, I removed the clocks and unplugged all connectors, checked the wires and pins and all looked good, I cant get under car yet as it is stupidly low so can't check other parts, the thing that points me too the clocks is when you hit the dash (just above the clocks) it flickers and can come back to life, any other parts behind the clocks that I can take a look at?
Thanks, Martin.

[TPS]

Diff.Plug

[E30Martin]

Yes, I have just been reading about the wires too the sensor, have to leave it for now, waiting for my low entry jack to come.

[Brianmoooore]

Speedo. assembly plugs into the main cluster circuit board. Remove it and check the soldered joints of the pins that form the plug.

[gromgsxr]

Id vote speedo mine did exactly the same re flowed the solder heated it up with a soldering iron and added some fresh solder been fine ever since.

[E30Martin]

OK nice one, I'll pull them out again sometime in week, I'll report back when done

[etouring]

Mine was diff plug, really easy fix

[Brianmoooore]

the thing that points me too the clocks is when you hit the dash (just above the clocks) it flickers and can come back to life

Diff. plug/cable faults don't respond to hitting the dash.