I am in Cancun Mexico. Had Alternator problems. The auto electrical guy here took it all apart and rewound the router. Installed, it blow past 32 volts once it warned up. Now my glow plug light comes on for just a blink of an eye, and gone. Blow some relay I would think. But what relay? Or is it something else? Any help, and parts would be greatly appreciated.
No glowplugs light
- Thread starter Philip Biernaski
- Start date
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Need to know the following:
Model
Year
Engine
Superglow?
Hopefully the overcharge didn't fry the glow controller (the computer that runs the timer). Blowing a relay would mean that you would get no glowing at all when you should...
Model
Year
Engine
Superglow?
Hopefully the overcharge didn't fry the glow controller (the computer that runs the timer). Blowing a relay would mean that you would get no glowing at all when you should...
- Thread starter
- #3
Thanks for looking in BreckenridgeCruiser. 1985, HJ60 Canadian edition, 24 volts, 2H engine. Superglow? I do not know
How did your glow system work before the issues? Light for 3-4 second and then a thunk from the engine around 15 more? Or light for around 10-20 seconds and then start.
I just came across this thread while looking up info on my fuel feed pump. Perhaps you can enlighten me on the behaviour of my superglow system.
As mentioned in your 2015 post, my glow indicator light comes on for about a second or two, goes out, then about 15 seconds later I get the 'thunk' sound and the engine fires up no problem.
Been doing this for twenty years ! This was happening when I had the original preheater timer installed. Then a year and a half ago that timer failed and I replaced it with a solid state one.
Same startup procedure.as before. Any ideas on this ?
John in Victoria bc
@bj424x4 sure! Simply, the system is specced with a lower rated glow plug than the base voltage of the truck. An example is 14v plugs on a 24v truck.
The system is designed to open a relay and hit the 14v plugs with the full 24v, thereby super heating them quickly for a few seconds: when your dash light is on. The timer then closes the relay before burning out the plugs. This phase is called the SuperGlow phase.
Then the timer opens another relay that sends voltage to the plugs with a reduction of voltage closer to the rating of the plugs, so around 12v. This is a longer cycle which is stopped when the plugs reach a set temperature, measured by the timer by reading the resistance on the plugs (resistance increases when temperature increases). This is the standard glow phase.
The system was designed to allow for faster preheating and therefore quicker starting and driving. It is assumed this was due to drivers impatience with having to wait for the 20 to 30 seconds of a normal standard glow system.
The expected operation of the system was for the driver to turn the key and the glow light would come on (SuperGlow) for a few seconds and then the driver could start the engine. The timer would then start the secondary standard glow cycle to continue to heat the cylinders and smooth out the engine while it was running and warming up.
When I lived in cold climates I could operate my engine like it was designed, but I preferred to do a full cycle without starting the engine, waiting a few seconds after the second glow ended, and then start it after a second super glow cycle, as the designers intended.
Hope that helps explain it.
The system is designed to open a relay and hit the 14v plugs with the full 24v, thereby super heating them quickly for a few seconds: when your dash light is on. The timer then closes the relay before burning out the plugs. This phase is called the SuperGlow phase.
Then the timer opens another relay that sends voltage to the plugs with a reduction of voltage closer to the rating of the plugs, so around 12v. This is a longer cycle which is stopped when the plugs reach a set temperature, measured by the timer by reading the resistance on the plugs (resistance increases when temperature increases). This is the standard glow phase.
The system was designed to allow for faster preheating and therefore quicker starting and driving. It is assumed this was due to drivers impatience with having to wait for the 20 to 30 seconds of a normal standard glow system.
The expected operation of the system was for the driver to turn the key and the glow light would come on (SuperGlow) for a few seconds and then the driver could start the engine. The timer would then start the secondary standard glow cycle to continue to heat the cylinders and smooth out the engine while it was running and warming up.
When I lived in cold climates I could operate my engine like it was designed, but I preferred to do a full cycle without starting the engine, waiting a few seconds after the second glow ended, and then start it after a second super glow cycle, as the designers intended.
Hope that helps explain it.
Yes, very good explanation That explains why I can start the engine after the glow light goes off and before the glow cycle has finished.
If it's cold I'll wait for the sound of the relays but otherwise it starts fine within a few seconds of the glow light going out.
If it's cold I'll wait for the sound of the relays but otherwise it starts fine within a few seconds of the glow light going out.
@bj424x4 exactly. The timer has a bunch of sensing it does to refine the process I described above based on temperature. That's why if you cycle through the whole glow, and then do to again, or if you stop the truck after a drive and restart with the engine still warmed up, the SuperGlow cycle is super short. The timer can detect that it is already warm and adjust the cycle times.
