: 83 Coupe with code 24 speed sensor problem

01-25-06, 11:34 AM
Just bought my 1983 coupe deville. I have a code 24 speed sensor circuit problem. I am looking for some advice.
1. Any ideas on trouble shooting this?
2. Will it hurt anything if I drive it with this code till I fix it?
3. Where is the speed sensor? The buffer amp? Also are these dealer parts or autozone parts?


01-27-06, 09:10 PM
Does anyone have any ideas???????

Please help.


01-27-06, 10:10 PM
The speed sensor is located int he back of the instrument cluster. It is driven right where the cable enters the back of the cluster. I think yours is the infrared style that uses a spinning mirror and a transmit and recieve IR LED pointed at it. There's three wires to the buffer amp from the LEDs, Power and ground for the amp itself, and one Tan wire to the ECM that should alternate from .6 to 11 volts when moving.

Your best bet for both items is the junkyard. With this sensor inoperative, I think your biggest loss is the Cruise Control.

01-27-06, 10:50 PM
Thank You
This gives me some place to start.