Glow Plug Resistance
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Joined: Mar 2014
Posts: 10,750
Likes: 1,065
From: Douglassville, PA
I used the block I can't remember exactly where but knowing how I operate I probably used one of the holes from the VC bolts. They're clean, accessible and right near the glow plug so there is less chance of anything going wrong.
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Laughing Gas
Joined: Aug 2003
Posts: 836
Likes: 9
Can't say what's typical. The link I posted earlier says most good glow plugs will read between .01 and .05.
7.3L IDI Glow Plug Troubleshooting
The consensus on the forum is anything under .2 is good.
I tested both sides several times, I grounded at the negative battery terminal.
Drivers side front to back was .06 .05 .05 .05 Passenger side .02 .02 .03 .02
I will add that my GPR is not working. After I replace it today I am going to retest the glow plugs after they have had a chance to cycle a few times and see that they read..
7.3L IDI Glow Plug Troubleshooting
The consensus on the forum is anything under .2 is good.
I tested both sides several times, I grounded at the negative battery terminal.
Drivers side front to back was .06 .05 .05 .05 Passenger side .02 .02 .03 .02
I will add that my GPR is not working. After I replace it today I am going to retest the glow plugs after they have had a chance to cycle a few times and see that they read..
Logistics Pro
Joined: Nov 2006
Posts: 3,674
Likes: 367
From: Fallon,NV & Bainbridge OH
It is not "The consensus on the forum is anything under .2 is good.", it is anything under 2. They don't have to be close to each other either, it is not like compression testing, as long as they are under 2 ohms of resistance they are good.
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idahodisco
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
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Mar 24, 2010 08:47 PM
