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My 2000 Model F250 with the 7.3L is having a hard starting problem. I've already put some Stiction Removal additives to my oil. I replaced the Glow Plug relay yesterday but the pole that feeds the glow plugs is still not going "hot" when the key is turned to the "on" position. The other 3 poles on the relay are all hot.
In the wiring diagrams, it shows a 20 GA fuse in the line to the glow plug relay. Is this fuse in the fuse box under the dash or is it actually "in the line" somewhere?
It is possible that your new GPR is also bad. Try jumping across your relay with a large screwdriver for a minute and see if it will start for you. It should arc a little when you first make that connection if the rest of the system is functioning.
It could also be in the PCM. The one little wire pulls to ground I believe to activate the GPR when the conditions are right. If your oil temp is to high and or temp to high the glow plugs don't come on. The light on the dash don't matter. Look up starting issues here and it will take you threw them all.
My 2000 Model F250 with the 7.3L is having a hard starting problem. I've already put some Stiction Removal additives to my oil. I replaced the Glow Plug relay yesterday but the pole that feeds the glow plugs is still not going "hot" when the key is turned to the "on" position. The other 3 poles on the relay are all hot.
In the wiring diagrams, it shows a 20 GA fuse in the line to the glow plug relay. Is this fuse in the fuse box under the dash or is it actually "in the line" somewhere?
Thanks!
The Lug that supplies voltage should be hot at all times. Check the Fusible Links. The other Lug has the GP Feed Wires (2). The smaller Pole is Hot at All Times and the other is a ground which is switched by the PCM.
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