Cummins engine dies and then !!!
2002 National- Islander, 40 ft. - Cummins Diesel. on trip to Bremen,In.in Sept.2013 our coach quit running and after pulling off to side of road we determined engine was idling but when pressing gas...
Forum Discussion
First diagnostic: when this happens do any of the "only work with ignition on" accessories work? Dash HVAC fan, transmission shift pad illuminate, etc?
If not, suspect the IGNITION SOLENOID, ignition switch or wiring between them.
Find the solenoid. Troubleshooting is quite easy with a voltmeter:
One large lug will have chassis battery voltage all the time.
The other large lug will have chassis battery voltage only with ignition on.
If the second lug does not have voltage with the ignition on, the solenoid is bad, ignition switch is bad or wiring between them is bad.
SO, locate the small terminal(s). If only one, it is the 12 VDC positive from ignition switch and ground is through metal body of the solenoid. If two small terminals, the second one is ground. So, with ignition on, check for 12 VDC at the small positive terminal. If power, but no power to the second large lug, the solenoid is bad. If not power to the small terminal, problem with ignition switch, fuse for ignition or wiring between switch and solenoid.
3 minutes with a voltmeter will tell you.
If not, suspect the IGNITION SOLENOID, ignition switch or wiring between them.
Find the solenoid. Troubleshooting is quite easy with a voltmeter:
One large lug will have chassis battery voltage all the time.
The other large lug will have chassis battery voltage only with ignition on.
If the second lug does not have voltage with the ignition on, the solenoid is bad, ignition switch is bad or wiring between them is bad.
SO, locate the small terminal(s). If only one, it is the 12 VDC positive from ignition switch and ground is through metal body of the solenoid. If two small terminals, the second one is ground. So, with ignition on, check for 12 VDC at the small positive terminal. If power, but no power to the second large lug, the solenoid is bad. If not power to the small terminal, problem with ignition switch, fuse for ignition or wiring between switch and solenoid.
3 minutes with a voltmeter will tell you.
