Speedometer quit working

bad guage cluster? does the odometer still work? Mazda can hook up the scan tool and do a guage sweep to see if the cluster is operative.
 
yea but the tach and the speedometer are 2 seperate circuits, could just be a short in the speedo part,
 
then it sound like a bad cluster. take it somewhere and have them sweep it with the scantool and go from there.
 
make sure you check all the fuses, i'm sure that the tach and the speedo are probably on the same one, but someone above mentioned different circuits.
 
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