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post #1 of 17 Old 12-04-2006, 04:20 PM Thread Starter
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Glow plug relay/solenoid

I have been having trouble starting my pickup lately. I did some investigating and found that the glow plug solenoid/relay was not applying power to the glow plugs. The coil is working because I can hear it engage, but no power out. I got a new relay and installed it (I checked it first and it worked), and then after installation I checked it and no power out. I took it off and checked it on the workbench, and I can feel the coil activating, but there is no continuity across the power terminals. I can't for the life of me see how I could have damaged this thing. Any thoughts or help. If I have one or more bad glow plugs, could this cause this problem? What's the best/easiest way to test the glow plugs, if that's what I need to do? 2001 F250 CrewCab 4x4, if that makes any difference.

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Mike
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post #2 of 17 Old 12-04-2006, 04:28 PM
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check the 7.3 tech files i think there is a post in there how to do it

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post #3 of 17 Old 12-04-2006, 04:57 PM
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There is a 30 amp fuse under the hood that operates the GPR and Fuel heater. Check it and then we can go from there.

2003 6.0 F350 dually on high cholesterol fuel (WVO)
2000 7.3 Excursion also on a high cholesterol fuel



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post #4 of 17 Old 12-04-2006, 04:57 PM
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Oh and to Powerstroke.org!!!

2003 6.0 F350 dually on high cholesterol fuel (WVO)
2000 7.3 Excursion also on a high cholesterol fuel



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post #5 of 17 Old 12-04-2006, 05:01 PM Thread Starter
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I have power to the relay (it's activating the coil).
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post #6 of 17 Old 12-04-2006, 05:04 PM
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Quote:
Originally Posted by lt2fire View Post
I have power to the relay (it's activating the coil).
Opps, guess i read your post to fast. I thought you said you had no power.
Where did you get the relay?

2003 6.0 F350 dually on high cholesterol fuel (WVO)
2000 7.3 Excursion also on a high cholesterol fuel



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post #7 of 17 Old 12-04-2006, 05:04 PM Thread Starter
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The relay is receiving power, because I can hear and feel it activating. I am guessing that the old one is just carboned up from arcing - as far as I know it's the original. Is there anything that could cause my problem with the new one?

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Mike
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post #8 of 17 Old 12-04-2006, 05:05 PM
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Where did you get the relay?

2003 6.0 F350 dually on high cholesterol fuel (WVO)
2000 7.3 Excursion also on a high cholesterol fuel



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post #9 of 17 Old 12-04-2006, 05:09 PM Thread Starter
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I have power

I have power to the GPR because I can hear and feel the coil activating. I don't get power to the GP side of the relay, which I am guessing is due to it's age. Can anything that I've done have caused this problem with the new GPR or did I just get a dud? I don't see what could have happened, but maybe I'm missing something. I hooked it up the same way it was, but I don't see how or why it would matter if you switched a pair of wires to opposite terminals.

Thanks,

Mike
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post #10 of 17 Old 12-04-2006, 05:10 PM Thread Starter
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I bought it on Ebay - it's an aftermarket unit, but it did work when I tried it on the bench before installing it. It doesn't close nearly as hard as the factory one seems to.

Mike
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