Acceleration surge in hot weather

[Jakey14424]

I have a 2010 Ford Explorer XLT V6. When the outside temps are 95F or higher my truck will start to sputter when accelerating. It only does it when the vehicle is being driven when outside temps are in the high 90s or higher.

 

[Bazz270]

Maybe something like cooling fan clutch related issue?

 

[Jakey14424]

Maybe something like cooling fan clutch related issue?

That's one of the things I checked. It seems to engage and disengage as normal. I was thinking maybe a vaccum leak but I can't find anything related on the forums...

 

[Gary Crist]

The blend of your gasoline would be my guess.