Quote:
Originally Posted by robgsailor
Thanks,
I have unplugged and reconnected the electronic panel to no avail. The temperature alarm light and the glow plug indicator light still don't work.
I will check the temperature sender, but I am suspecting that it may be the electronic panel failing as the glow plug indicator on the panel doesn't work and I know that all 3 glow plugs work well.
So, I will buy the electronic panel and replace it hoping that that will fix it.
Thanks for your help
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Replacing the entire panel is a possible fix but tkeithlu gave you a more complete answer. Diagnose and fix the problems rather than replacing the panel.
There is one cause that could be responsible for all of these issues. The keyswitch may not be providing +12 volts to the alarm circuits.
The temperature alarm light will not light until you have an overheat situation. Test the circuit. Put the engine key in the run position without starting the engine. Ground the wire on the temperature sensor. The light should light and the alarm should sound. If so there is no problem. This does not test the sensor. To do that it has to be removed from the engine and heated to the temperature trip value.
The glowplug light should only light up when pre-heating before starting, not while the engine is running. To test the preheat light first be sure the glow plugs have
power. Test by putting the keyswitch (or pre-heat button) to preheat and read the voltage at the glowplugs. If there is voltage then somewhere there is a broken wire from the glowplug circuit to the light. This will take two people to do the test. One to hold the button and one to measure the voltage.
Does the buzzer sound when you start the engine? If not the buzzer circuit is bad.
There is no point in paying for a new panel when this is a
wiring or keyswitch issue. You may throw
money at the problem and not fix it. These circuits are electricity 101 issues, treat them that way.