glow plug sensor

[2deuce]

I don't believe mine is working right. The wait time is the same hot or cold and the GP relay cycles the same hot or cold. Are they repairable? Can someone explain how it works? Does it also control idle speed?

Thanks

 

[m38inmaine]

Does not control idle speed, there is a temp sensor pass side head that controls high idle speed. Unless the wiring is bad it is not repairable. Based on engine temperature it tells the glow plug controller to activate or not, there is a troubleshooting proceedure in the manual that explains how to test the system.