Hello All, I have a 99 bluebird tcre with a ISC 300 Cummins, When you cycle key to turn engine off sometimes it stays running, thought it was a key switch so i replaced that, still doing same thing. I found the two relays in the front panel in front of the driver that controls the ignition, when you turn they off and tap one of those two relays the bus shuts off. I replaced both relays. still same thing, I have been trying to find a wiring diagram for this bus and cannot find one. I think there is a little feedback going thru the relay. Pls help
If I had to guess, which I have to because I am not familiar with this bus or have a schematic :), but I would look for a bad connection and would suspect it is in the area of these 2 relays you speak of, and when you tap on them it is actually affecting the poor connection.
Relay sticking '99 Blue Bird TC RE
Posted - 02/22/2018 : 12:44:20 PM
