First start of the day, of course I need the glow plugs. But after a drive I occasionally hop in and start the truck without thinking. Does it hurt anything if I start the truck while the glow plugs are still energized?
No it does not hurt the glow plugs. I do this all day long. I just hop in and hit the key without waiting. The Wait to Start should go out quickly after the first start if the engine has been used (up to temperature).
First start of the day, of course I need the glow plugs. But after a drive I occasionally hop in and start the truck without thinking. Does it hurt anything if I start the truck while the glow plugs are still energized?
M
My 85 E350 likes to cycle the plugs a few times with the engine running, the WTS light comes on and everything.
That was for emissions, to help clear up any smoke from the tailpipe. Excessive wear on the glowplug relay is all it really is.
the only thing it would hurt is the alternator. Its not gonna kill it but it will eventually wear it out faster. The alternator will try to charge the battery run the starter and run the glowplugs. the glowplugs drain a lot of amps. almost as much as the starter. if your engine is already warm, and dont want the glowplugs to always engage, you have to look up the mod. It will save your glow plugs, alternator, and the batteries. you just have to manually hold a button to turn on the glow plugs. if you dont have any electrical background, i would just wait for the voltage meter to go back to 12v.
if your engine is already warm, and dont want the glowplugs to always engage, you have to look up the mod. It will save your glow plugs, alternator, and the batteries. you just have to manually hold a button to turn on the glow plugs.
This was my original plan but I somehow got things twisted up in my wire harness so I punted. It’s nice to have some control over it. I can short cycle it just by flipping the switch on and back off. It kills it as soon as the switch is off.You can also remove the ignition source to controller, and splice into the cold advance/high idle circuit. That way controller automatically shuts off above 135* coolant temp.
You can also remove the ignition source to controller, and splice into the cold advance/high idle circuit. That way controller automatically shuts off above 135* coolant temp.
That sounds more like a bad switch, all the ignition source is doing is energizing a coil in a relay, the switches go bad a lot so I bet it was just the temp switch, I’ve done this mod to probably a dozen trucks without the temp switch burning upthis is what I did on sulaco.
but 4-5 times of it starting, it fried the switch.
I suggest putting a relay when doing this.