02-01-2015, 08:35 PM
Join Date: Aug 2009
Location: Marshalltown IOWA
04 hemi loosening power underload??
I have a 04 2500 hemi yesterday it would loose power
Underload like going up hill
like it's not running on all cyl. If you drive in 2nd gear it's fine
When idling it goes all over the place 300-1200rpm.
Any ideas? About ready for a old cummins.
2004 2500 4dr long box
only mod is superchip
but planning on many more.