panhandler
New Member
Good Folks - I have a 99 EB 5.4L 4x4, 133k miles and a problem. Between 35-50mph, with overdrive on, I get massive misfire/rumble/jerking/stuttering. It's particularly bad under load (driving uphill, etc). When I turn overdrive off it improves considerably but still acts up some. Is this more likely coil packs/plugs or do I have a transmission issue (or none or both)? Any help is greatly appreciated!