I’m new here so bare with me if I say or do something wrong. I have a 2016 f150 5.0 with a Whipple supercharger. I noticed the other day I went to turn my truck on with the key fob and it struggled. It started but almost sounded like the rpms dropped a lot Pretty much right away (almost like it died) then rpms got back up to normal and ran fine. I noticed it again this morning but this time I turned it on with the push to start inside the truck. Really just seems like the truck is going to shut off right of the bat but then comes back to life. I have cycled it a few times and have only noticed it the 2 times. Also not sure if it helps but the truck is sitting out side in roughly 50-60 degree weather. It does have an engine block warmer but I haven’t used it (truck is new to me). And I also run premium fuel. Has anyone else noticed this with they’re trucks? Is it normal? Could the cold weather be causing this? Haven’t had any other problems just curious if this should be concerning or not.

 

Load test the battery. If it is still the factory battery, then you are probably due for a new one.

 

it is the original battery and now that I think of it that makes sense! Especially with the colder weather thanks I’ll get her tested today