Wait to start light will not come on
The wait to start light will not turn on that is on the dash. The truck won't start?
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Check your fuse box under the hood for any slot labeled ignition or PCM or glow plug. Check the fuse and make sure it's not blown.
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Fuse is under your steering wheel its a 30amp fuse its probably blown. And if it keeps blowing? unplug your fuel bowl heating element its most likely the cause, when they go bad they short causing the fuse to blow. Replace it our not you can run without it.
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Nope check the bulb in ur instrument panel first. Tiny bulbs do burn out. On time for glow plugs is actually commanded by the pcm and not the idm if a 7.3L. depending on the year u have a glow plug relay that looks like a starter relay or a gpcm. To Test the starter style relay there are 2 large wires one will have constant 12v the other will not until u turn koeo ( key on engine off) once that's been done the other large wire ajasent to other will receive 12 v as well and the pcm will shut it off depending on vehicle block temp. If it doesn't “ jump" to other terminal ur relay is bad and needs replacement.
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What if the other large wire have 0v?
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will the truck crank over and if it does is there smoke or do you smell diesel
door Jimfixer