Does anyone know how the speed sensor works? I have a faulty speedo reading when the car is cold and the lockup torque converter also plays up when cold. (I think the transmission problem is related to the speed sensor).

I assume the speed sensor has a spindle that engages the output shaft of the transmision and the sensor then outputs a voltage based on the speed of the output shaft. Am I right or wrong?

Why then would this speedo fault be related to temperature if the sensor is faulty?

Anyone with some thoughts on this?

Brent.

 

Perhaps the sensor is faulty during cold weather but gets better as is gets hot. Why I don,t know. I do know that it will affect tranny shifts and speedometer readings. I know some cars sensors are magnetically operated with something in the tranny giving it it,s signal. Not sure about yours though. If you think or know it,s bad, change asap cause it will only get worse and pi$$ you off.