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Old 10-09-2013, 08:15 PM
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GPR Bypass Switch?

A little background info. I have an early 99 7.3. I am currently in college in South Dakota where it does get cold. Problem is, I have no where to plug it in. No outside outlets on campus as far as I can see. I have heard of a glow plug relay bypass switch which supposedly makes the truck a whole lot easier to start in very cold temperatures. My question is, are these things worth it? And if so, how do I go about installing one? I have very little knowledge on this so any input would be nice.
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Old 10-09-2013, 08:19 PM
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never heard of it bud, but you could install synthetic oil..5w/40 and that will help with cold starts.
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Old 10-09-2013, 08:22 PM
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I haven't been able to get much info on them either. Google came up with nothing. It is possible the guy that told me about them is just an idiot. I'll dig a bit more and see
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Old 10-09-2013, 08:35 PM
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probably..only "mod" i know for the gpr, is with a led light, to let you know, when the gpr is on / off, to then fire truck up, since the WTS is a dummy light.
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Old 10-10-2013, 01:09 PM
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You could always bypass the GPR and just put the glow plugs on a switch or momentary button, but why?

You do understand the WTS light has NOTHING to do with how long the glow plugs are on right?

Turn your key on, and wait about 15 seconds, then crank...

This is assuming your glow plug system is working properly.
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Old 10-14-2013, 10:05 PM
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stancor glow plug relay is the way to go.

synthetic oil helps big time.
i go up to cold weather occasionally, 5-15 degress, and my truck starts no problem without being plugged in.
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Old 10-14-2013, 10:23 PM
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one more for synthetic oil. I've been using rotella t6 and it's been starting great. it's not a glowplug issue, the injectors glue themselves together with cold, thick oil. thinner oil that isn't affected by temperature will allow the injectors solenoids to move the armatures.

I have a glow plug bypass switch on my truck to turn the glow plugs off in the summer to reduce wear and tear on them. under normal circumatances the glow plugs just work they way they should until the engine reaches a certain temperature.
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Old 10-24-2013, 12:15 PM
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Yeah I'll give synthetic a try. It hasn't gotten too cold yet so I haven't had any major problems, but it will. Thanks for the help
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Old 10-24-2013, 01:25 PM
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Quote:
Originally Posted by dylanj075 View Post
A little background info. I have an early 99 7.3. I am currently in college in South Dakota where it does get cold. Problem is, I have no where to plug it in. No outside outlets on campus as far as I can see. I have heard of a glow plug relay bypass switch which supposedly makes the truck a whole lot easier to start in very cold temperatures. My question is, are these things worth it? And if so, how do I go about installing one? I have very little knowledge on this so any input would be nice.
Living in SD chances are your not gonna see temperatures that your truck cant start in. If you have a good functioning GP system your not gonna have any problems starting in ~0 temps unplugged. The truck will surely hate you and p--- smoke everywhere but it should start.
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Old 12-07-2013, 08:35 PM
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Thanks for the input. It has been cold here the past few days, about -10 for the past 3. This past Wednesday, I went to start it to go to work. It was a hard ***** to start but it fired up, but I must have cracked something because now I have a diesel leak. I probably broke a line or something. Not a huge deal, I just need it to warm up enough to go out and try to diagnose and fix the problem
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