1996 Mazda b3000

Electrical problem
1996 Mazda b3000 6 cyl Two Wheel Drive Automatic 139000 miles

my pick-up's speedometer only works on cold mornings and only till it warms up.I've replaced the sensor on the transmission and looked on the instrument panel it's self and don't see a problem. So my question is what could the problem be?
Philip oberg
September 30, 2008.

Check out the related content below while we wait for the question to be answered by a professional mechanic.