Re: motor dies when using overdrive.

Posted by 39SixSedanMan On 2012/11/15 12:41:27

I would also consider the condition of the governor switch. The design of the switch has an intentional difference in the engagement vs. disengagement speeds. I am wondering if your governor swtich is keeping the car in OD to a severly low speed. Can you tell, when decelerating, the moment and speed at which the OD disengages? This can usually be detected by the solenoid click and if on an downward incline, you can feel the car begin to freewheel.

As a means to test this possible root cause, take the car for a drive, allow overdrive to engage. Then when decelerating to a stop, gently pull the OD cable out just enough to open the contacts of the cable lockout switch. This will open the circtuit causing, OD to disengage. If you come happily to the stop without stall, I would suspect the governor switch. If you do, I would then consider replacing the cap switch or at least opening the switch up and cleaning the governor weight mechanism.

I hope this helps.