I have the white face guages just recently they started reading slower engine speed when I was realy going faster also the needle seemed to hesitate when decelerating speed.Some one mentioned replacing the speed sensor just wanted to no if anyone has had this problem and any fix info.

 

Sounds like the speed sensor / transducer on your transmission. I have read a couple of posts where people have noticed the sensor has become dislodged from the transmission causing faults. Cheaper fix than having to replace the sensor.

B.