My CEL came on this morning (-7 degrees) but the truck is running normal. I fueled up at the same place as always and it was this cold yesterday morning. Should I be concerned?
Thanks!

 

Did you put in any kind of fuel addititve with that fuel?

 

No

 

I'd say your fuel might have gelled up a little, With temps like that you should add some winter time Power Service Diesel Kleen. Just keep an eye on it and you should be fine as long as it doesn't get any worse

 

I'll put some in today, thanks for all the help.

 

No problem pal, report back if you have any other problems

 

I would say never ignore a check engine light until you know the code. It could be on for a random issue that all it needs is cleared but also a more serious issue that can cause damage and big bucks. At least have the code pulled. My2cents

 

Yeah, what is the code? You could be running low fuel pressure with partially iced over fuel filters...