wrenching4life

The dealer insists that there is no such update and they told me to check the power relays, apparently those will cause low power so they say, any more thoughts?

Hey all, as the topic lists i have a 2004 granite that is the most gutless wonder iv ever driven. cant get out of its own way until 1600-1800 rpm then pulls like a freight train. iv read a few things on this topic and iv called the dealer about a reflash and such. They say there is no such thing for that truck. Has anyone had this problem? any luck getting it fixed? chime in id really like to make it the 460 it should be!

Hey all, im in the process of setting up my work truck (1989 RW713 with E9 ) with AC again, its going to get hot soon enough! The truck currently has only the grill-denser and every other component is missing. Id like to convert it to a 134a system, rather than the R12. Does anyone have any pictures they could send me of the compressor, mounting, the lines,, routing? And if anyone has any part numbers for the components that would be awesome! thanks all!

yea im still having this issue the valve that is exhausting when the parking brake off and service brakes applied is the valve in the rear that connects to all the emergency side of the brake cans. I still can not make any sense of it. One thing that I do know is with the parking brake off and you apply the trolly brake there is no air exhausted from the same valve... the valve will only exhaust with the service brake (pedal application) thoughts?

Hey all, im working on a 2004 Mack granite roll off dumpster truck, tri-axle. The issue im having which iv still yet to figure out is every time the service brake is applied their is an instant sneeze of air from one or a pair of valves on the passenger side frame rail, at the rear of the truck. Then the hiss stops and the brakes apply. I can get only about 3 service brake hits with the engine off, and air built to the gov cut out.(aprox 120). Im used to internationals/ pete's and have never run into this before, this does not seem normal to me. Any thoughts on this one? im thinking the sneeze/hiss is not normal when first applying and i should get more than 3 hits on the service brake before the maxi's come on? thanks all!