I have a 24V - 1981 BJ42 with a 3B(-T) from a 1983 BJ60. It has been working well until recently. I found my glow system is acting up.
I get good glow and quick startup all the time. Recently, the truck began leaving the glow plugs powered all the time (switch off, truck running, etc).
What I experience is: I turn the switch backward to power the glow plugs, wait ~15 seconds, then start. The glow indicator lights up around 12-15 seconds. I found a couple of times, it stayed glowing even after that. The first time, I kept playing with the switch and eventually got it to shut down after ~10 minutes. The next time, today, I could not get it off after 10 minutes, and disconnected the battery at the "fusible link", which shut it down then, but I found when I re-connected the fusible link, it powered back up, without the key.
I then pulled apart the ignition switch and that did not help (got the springs to go everywhere, that was fun putting back together). I found the glow relay and messed with it. I found the thing that shut it down was unplugging the ignition switch side and unbolting from the body. Then when I reconnected, it was off. I could turn it back on with the switch and then it would stay on. I took apart the relay and it looks OK inside, very clean, no burn marks or anything. Not sure what I am looking at more than that. After leaving it alone for an hour, I re-bolted it to the body and reconnected. It now works correctly, but I am afraid it will happen again in a few days, probably when I need to use the truck and cant spend the time messing with it.
P.S. I have the dash glow switch as well and have used that as well, for more glow when it is ~30F. I originally thought that switch was sticking and I pulled the switch connector while the glow system would not shut off and there was no change. So does not seem to be that switch.
So, my question: What is the problem? Do I need to get a new relay? is there something else I am missing?
Any help is appreciated.
Cheers.
I get good glow and quick startup all the time. Recently, the truck began leaving the glow plugs powered all the time (switch off, truck running, etc).
What I experience is: I turn the switch backward to power the glow plugs, wait ~15 seconds, then start. The glow indicator lights up around 12-15 seconds. I found a couple of times, it stayed glowing even after that. The first time, I kept playing with the switch and eventually got it to shut down after ~10 minutes. The next time, today, I could not get it off after 10 minutes, and disconnected the battery at the "fusible link", which shut it down then, but I found when I re-connected the fusible link, it powered back up, without the key.
I then pulled apart the ignition switch and that did not help (got the springs to go everywhere, that was fun putting back together). I found the glow relay and messed with it. I found the thing that shut it down was unplugging the ignition switch side and unbolting from the body. Then when I reconnected, it was off. I could turn it back on with the switch and then it would stay on. I took apart the relay and it looks OK inside, very clean, no burn marks or anything. Not sure what I am looking at more than that. After leaving it alone for an hour, I re-bolted it to the body and reconnected. It now works correctly, but I am afraid it will happen again in a few days, probably when I need to use the truck and cant spend the time messing with it.
P.S. I have the dash glow switch as well and have used that as well, for more glow when it is ~30F. I originally thought that switch was sticking and I pulled the switch connector while the glow system would not shut off and there was no change. So does not seem to be that switch.
So, my question: What is the problem? Do I need to get a new relay? is there something else I am missing?
Any help is appreciated.
Cheers.
