MAL Code 24 - Speedometer & Factory RPM (LED) NOT WORKING?!

[Antbankstwo3]

For some reason my Speedometer & factory RPM LED on my dash just stopped working. Also, the MPH is t registering on the scanmaster. The arm on speedometer doesnt move. The LED for factory RPM is stuck on 2 or 3 bars. I have some ideas of what it might be, but thought I'd get more help here first. Any info will help!

Thank u!

 

[Raeban]

I would start with why the speedometer isn't working. Check the cable and back of instrument panel. If the cable is broke its possible the code 24 and the lack of MPH on the scanmaster go hand in hand. As for the LED for the tach I would start with checking the ground under the drivers dash and then check the white wire at the diagnostic connector for voltage with the engine running. You should see between 1 to 7 volts. With the instrument panel out I would check the ground connections to the cluster as well.

 

[Antbankstwo3]

I would start with why the speedometer isn't working. Check the cable and back of instrument panel. If the cable is broke its possible the code 24 and the lack of MPH on the scanmaster go hand in hand. As for the LED for the tach I would start with checking the ground under the drivers dash and then check the white wire at the diagnostic connector for voltage with the engine running. You should see between 1 to 7 volts. With the instrument panel out I would check the ground connections to the cluster as well.

Thanks for the reply! I will check out the cluster. I inspected the cable & there is a cut in the outer black part of the cable, but not the hard line inside. Could that affect the speedo? Also, could the VSS be a possibility?

Kinda weird that the speedo & RPM LED both went at same time. Unless they are linked some how.

 

[Bescurred]

http://www.vortexbuicks-etc.com/code_24.htm

 

[Antbankstwo3]

Found my problem. The inner metal cable snapped. The long one that ones from the transmission to cable under the hood. Pic below, one side good, the other is snapped.

 

[Raeban]

That should take care of that