Glow plug controller??
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More Turbo
Joined: Oct 2009
Posts: 655
Likes: 18
From: Randolph County NC
Glow plug controller??
My Nephew has a < 90k mile 1994 7.3 Turbo Diesel that does not want to start. Batteries are less than a year old, battery cables look good, cranks fast but does not want to start 40* temps.
So far, we changed the glow plug relay but it did not fix the problem. I suspect the glow plug controller has a problem but I know little about this system. Other advice given was change glow plugs but this seems unreasonable to me. Appreciate any advise.
So far, we changed the glow plug relay but it did not fix the problem. I suspect the glow plug controller has a problem but I know little about this system. Other advice given was change glow plugs but this seems unreasonable to me. Appreciate any advise.
Elder User
Joined: Mar 2013
Posts: 691
Likes: 2
Either the controller is bad or the glow plugs are bad.
I put all plugs in my truck, still wouldnt start in cool temps, found the controller power wire was unhooked. Replaced it, figured it was unhooked for a reason
I put all plugs in my truck, still wouldnt start in cool temps, found the controller power wire was unhooked. Replaced it, figured it was unhooked for a reason
i ain't rite
Joined: Mar 2005
Posts: 65,561
Likes: 5,596
From: Marlboro Mental Hospital.
it could be a bad controller, disconnected controller power wire, disconnected controller ground wire, or bad glow plugs. what type glow plugs are in it? if they are not motorcraft ZD-9's, my bet is they are probably bad and there is nothing wrong with the controller.
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Joined: Oct 2009
Posts: 655
Likes: 18
From: Randolph County NC
The truck has the factory original glow plugs and controller. It has about 90k miles. I will read through Faqs and see what I can figure out.
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