TN_diesel

Ok so since i bought my truck 2 weeks ago ive only seen the wait to start light come on about 4 times tops (drive it every day starting it at least 5 times each day) here in east tn its between 25 - 38 degrees throughout the day....in my boss's f250 his comes on every single time, i didnt know if temp had something to do with it, if it should come on every time not matter what (i would think so?) or what exactly the conditions it comes on?

t-boe

If the underhood temp is 66* or higher the grid heaters won't come on. So if it was recently running and hadn't completely cooled down they won't come on. Normal ops bud.

CamperAndy

It comes on based on engine and air temp, it will not come on every time as it is not needed like it is on a Ford.

TN_diesel

alright, but im pretty sure when i went to start it this morning it didnt come on...got down to prob 33 last night, and it takes about 2 seconds of cranking for it finally start

t-boe

Do you plug it in at night?

TN_diesel

no, not really a need i wouldnt think for tn valley weather

DaveB.inVa

Where in East Tn are you? I work in Kingsport but live across the line in Va.

The block heater can be a real convenience, starts are easier and you get cab heat much quicker. I'll plug it in between 1 and 3 hrs before I'm ready to go depending on the ambient temp.

The heater cord is extremely easy to install and cheap as well. Its definitely one of the best things I've done to my truck!

TN_diesel

im in knox, and it doesnt get nearly as cold here as it does there lol