Ok, so I know the grids are cycled when its X degrees out and when the engine is at X temp, but when it gets below 5*Celcius even with my engine temp at 195*F on EVERY hot restart the Grids cycle for at least 30seconds or more
I have replaced the IAT sensor and there was no change, its an awful load for alternator for no good reason, I'm thinking I'll be pulling the small signal wires on the relays
anyone got any ideas??

 

I suppose Cummins and Dodge had a reason it was needed. JMHO

 

I think the third parameter in the mix is the vehicle's speed. Its been a long time since I read about it in the shop manual, but I think the speed has to be over 25mph before the grids are no longer "needed" for emissions purposes.

 

It is the way they intended it.

About the only thing you can do is put a manual button to bring them in.

I personally wouldn't worry about it.