GPR or GP Solenoid?
Thread Starter
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Laughing Gas
Joined: Sep 2007
Posts: 1,051
Likes: 4
From: Caro, MI
GPR or GP Solenoid? Causing no start issues
I went to start my truck the other day and it wouldn't start after the "wait to start" went out. Turn the key off and turn my headlights on and noticed that they did not dim like they normally do when the glow plugs cycle. I turned it the key on and off about 3 times and finally the glow plugs cycled. What do you guys think is the problem, GPR or the GP Solenoid? And yes I know I do need to do the LED for the GPs. Also, if you think it is the relay, which fuse panel is that relay located in and which relay is it? I know where the solenoid is at.
Posting Guru
Joined: Nov 2003
Posts: 1,949
Likes: 0
From: Near DC
Test the GPR and see if the relay closes and you have power out. Obviously check the fuse.
It is possible the stock GPR is going bye-bye.
I replaced mine before it died, simply because winter is coming and I don't want to be stuck. I removed the GPR and it actually rattled!!
I used Guzzle's method and the GPR from Mouser.
It's a one beer job.
Welcome to guzzle's Stancor GPR replacement Mod Web Page
Another good article:
https://www.ford-trucks.com/forums/7...pr-system.html
It is possible the stock GPR is going bye-bye.
I replaced mine before it died, simply because winter is coming and I don't want to be stuck. I removed the GPR and it actually rattled!!
I used Guzzle's method and the GPR from Mouser.
It's a one beer job.
Welcome to guzzle's Stancor GPR replacement Mod Web Page
Another good article:
https://www.ford-trucks.com/forums/7...pr-system.html
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
I think you're talking about the same thing. GPR = Glow Plug Relay. Not sure what a "GP Solenoid" is, but you might be referring to the same item. The battery goes strait to the relay, then the relay distributes the battery voltage to the GPs.
Thread Starter
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Laughing Gas
Joined: Sep 2007
Posts: 1,051
Likes: 4
From: Caro, MI
Yes I thought there would be a relay and a solenoid. There must be just a solenoid. I think of a relay being a five post inch by inch relay and solenoid being a larger four post relay for larger voltage than a relay.
