i have a 1989 2.5 5speed grand am, computer code was a 24, for
replacement of speed sensor, i have replace the sensor but yet
it still does not work, any ideas?

 

Possible problem with the cluster itself. They can be sent away and tested for fault before repair.

 

Does your car have a photocell type VSS mounted on the back of the speedo head? Did you check the VSS buffer? Did you check for continuity between the VSS, the buffer & the ECM?

 

sensor doesn't have a photocell, before the sensor went bad
it would take about 10 mins. of driving before it would begin
to start operating and after i would turn the car off it would
sometime take as long or it would work right away. i have not
checked the the connections to the ECM, i also replaced the
MAP SENSOR and the TPS SENSOR. QUESTION; in the G.M.
HAYES ADDITION REPAIR MANUAL, the VSS buffer is mentioned
but not where it is located, can you help me with its location?
thanks