Wrench light reduce power


SDD Junior Member
Jan 8, 2012
Reaction score
Pendleton OR
Ok we have an 08 6.4 for the fire deparment. I posted some time ago about the dreaded wrench light well i thought we might have figured it out i was wrong. We changed the oil we changed all the fuel filters and it worked good for a long time well. The bad news i was driving it like a bat out of hell on my way to a house on fire and it about 4 miles from where it sits and about half mile from the house needless to say wrench light came on. I made to the job and things went well. I am angry that Ford has problems and people rely on this for emergencies and they fail. I guess it time to change brands and find one that we can trust. Does anyone or has anyone figure out the true cause yet
Angry with a product,