Last year at the end of the year when it got cold I noticed a very strong electrical burning smell when the glow plugs were cycling and my truck was hard to start. It starts fine when plugged in. I've put this off all summer and would like to get it fixed before it gets cold again. What would cause this burning smell? I dont know where to start. I've checked all plugs and they are all good so it must be the relay or control box or whatever controls them. Any info is appreciated.

 

Cummins engines don't have glowplugs. We have a grid heater that is connected to the intake horn on the plenum. Check you connections at the grid heater. You might need to replace it.

 

Kinda off topic but not really. I understand the grid heater and how it works but I dont get why it effects the stereo ! Only when its below 59* does the G.H come into play and only on occasions when I use G.H ( live in Texas ) . Turn the key wait for the light to go off ( radio is playing ) . Light goes off turn the key and start ........ RADIO doesn't come back on even If I drive for a period of time . It will come back on however after it has sat for a period of time if I dont have to use the G.H again what the hell ?

 

Dis-connect heater and drive like that for a week. See if stereo still acts up. If it does issue is somewhere else.

 

I'll give it a shot and let you know what comes of it . Thanks !