Quote:
Originally Posted by tahawus
The Truck is a 2004 mack vision daycab. I noticed about 2 months ago it would not work all the time only once and a while. I got the oil changed and that didnt help. About a month ago it quit working entirely. I changed the relay and checked the switch but they both are ok. Any suggestions? If it is something I can fix I would like to try rather than leaving it for days at the dealership while they take there time fixing it. The truck has 24,000 miles on it. Thanks
i had that happen three years ago it was a bad wire going into the ecu took 15min to fix but it took 4.5hr to find.
bob h is right that is how i found it