[GH85Carrera]

Richard, the cruise control parts I worked on are in the front of the car, far away from any engine components.

The cruise quit on my raod trip and the ultimate cause of that was a broken cable on the engine, but I never touched that until Saturday and it is fixed and working better than ever before. The running issue happened before I ever did anything to the cruise in the engine compartment. Like many systems on the 911, the cruise control was an add on system that was never part of the original design of the car. The box in the front just gets the speed from the sensor on the transmission split from the signal to the speedometer. The stalk next to the wiper switch set the cruise and the vacuum module in the engine compartment sets the bowden cable to a fixed throttle and the speed sensor will add or reduce the throttle as needed for hills.

I had a running issue like this once before right after an autocross. That was when the original coil finally gave up. I replaced it and all was good until recently. After three different coils, I still have the heat related running issue.

I do know that the head temp sensor will cause similar issues and that is next to replace. I have one at home already. I was just sure it was the DME itself especially when Steve Wong found some issues. At least I know it is not the issue now.