gthorn21
New member
I have an 03 6.0 I bought the truck needing some work. It had misfire, checked FICM found voltage falling, replaced with a good used one off a parts truck I have, also found alternator not charging found wire going to dash display for battery light broken under P/S reservoir got that fixed and then found some bad Injectors replaced all four on drivers side and that took care of that. Took truck for test drive and had a surging issue, had an ICP code found it leaking oil thru sensor replaced sensor and pigtail. Test drove again truck is still surging but I did notice of you set the cruise control surge seemed to go away. Put throttle pedal from good running truck in it with same issue. Only code it has now is FICM software incompatibility fault, took truck to Ford today so they could flash all computers with latest software. Was wondering if anyone has run into an issue like this before and what would be some good things to check if the software updates do not fix the issue.