Engine surge and fluttering while cruising.
#1
Engine surge and fluttering while cruising.
I was pulling a bobcat this week on the highway. Noticed that my truck was jumping about 50-100 rpms while on the lower range of the high gear. I have a quadzilla on it and a fass pump. It's staying around 10-14 psi after the filter of fuel pressure. Has 174,000 on it and all original parts from what I can tell. It's been starting and dying the first time it's cranked in the morning. I have figured just the cold weather. Anyone have any ideas. Crank sensor was changed two years ago. Also have a superchips flashpaq on it. Superchips programmer is set to performance and the tranny has a ats valve body.
#4