96 7.3 start up
Thread Starter
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Elder User
Joined: May 2011
Posts: 556
Likes: 0
From: Elyria, Ohio
I used the test light on the GPR the one side it would light up but the other it didnt. So i was gonna go to napa and buy a new GPR but im looking online and they only have two and their 70 and 80 bucks. what was the part number for the one you have ?
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
That's how its supposed to be unless the GPR is actually on. With the key off you'll have power to 1 big terminal and not the other one. Turn the key on and you should get power to the other big terminal for a while before it turns off again.
Thread Starter
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Elder User
Joined: May 2011
Posts: 556
Likes: 0
From: Elyria, Ohio
I had my buddy turn the key to so that light would turn on. I tried both side. Repeated and I didn't get the one side to light. I also had the light on the terminal then he turned the key and no ligh on the one side.
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Elder User
Joined: May 2011
Posts: 556
Likes: 0
From: Elyria, Ohio
I tired the test light again. i put the clip on the pos side of the battery turned the key on the touched both sides of the GPR one side would light but the other wouldnt. then i attached the testlight to the neg side of the battery and then did the same but it would light the side that wouldnt light before.
Does this mean my GPR is good?
Does it mean that my one of my glow plugs could be out?
Or the wires running from my glow plugs to the GPR are cut somewhere?
Does this mean my GPR is good?
Does it mean that my one of my glow plugs could be out?
Or the wires running from my glow plugs to the GPR are cut somewhere?
Post Fiend
Joined: Dec 2010
Posts: 10,121
Likes: 3
From: Orrville, Ohio
I tired the test light again. i put the clip on the pos side of the battery turned the key on the touched both sides of the GPR one side would light but the other wouldnt. then i attached the testlight to the neg side of the battery and then did the same but it would light the side that wouldnt light before.
Does this mean my GPR is good?
Does it mean that my one of my glow plugs could be out?
Or the wires running from my glow plugs to the GPR are cut somewhere?
Does this mean my GPR is good?
Does it mean that my one of my glow plugs could be out?
Or the wires running from my glow plugs to the GPR are cut somewhere?
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Postmaster
Joined: May 2011
Posts: 3,447
Likes: 0
From: Monroe City in
Thats good to hear. Easy fix. If every thing is operating the way it should you dont have to use your block heater.
Senior User
Joined: Nov 2010
Posts: 266
Likes: 0
From: gods country
i plug mine in when it starts to get about 30 degrees and when i plug it in it starts no problems i need a new relay my gps stay on for about 3 secs or i might wire in my own push button but i think i may get a new relay!
Post Fiend
Joined: Dec 2010
Posts: 10,121
Likes: 3
From: Orrville, Ohio
Glad you got it going!
I usually plug mine in when the overnight lows start to dip below freezing. One nice thing is that if you leave the blend selector on the defrost setting when you plug the truck in it will keep the frost off the windshield. Also, I bought a digital timer for mine that is set to turn on about 2 hours before I leave for work in the morning. That way I'm not paying to heat the engine all night long (just a waste of electricity IMO).
I usually plug mine in when the overnight lows start to dip below freezing. One nice thing is that if you leave the blend selector on the defrost setting when you plug the truck in it will keep the frost off the windshield. Also, I bought a digital timer for mine that is set to turn on about 2 hours before I leave for work in the morning. That way I'm not paying to heat the engine all night long (just a waste of electricity IMO).
Post Fiend
Joined: Dec 2009
Posts: 15,505
Likes: 18
From: Livoina,La
If your going by the light on the dash don't it's a dummy light bt if your relay really turns off after amfew seconds then you might have a bad EOT sensor. GP time on is controlled by oil temp
Senior User
Joined: Nov 2010
Posts: 266
Likes: 0
From: gods country
eot sensor
wheres the eot sensor located?
