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Old Oct 24, 2010 | 08:41 PM
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redman84
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From: College Station, TX
Ohming GPs
When you are Ohming glow plugs through the harness plug pins does the truck need to be running or key on? Or the GPR active vs inactive or what?
 
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Old Oct 24, 2010 | 09:32 PM
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No. You need to just touch one lead to the pin(s) in the harness and the other to the engine head.
 
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Old Oct 24, 2010 | 09:47 PM
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Neal 97 250
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No. Engine off. Unplug the wiring harness from the VC connection and use the center pin for the gorund also. That will give you a good ground. Or use the head.
 
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Old Oct 24, 2010 | 09:50 PM
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cowmilker08
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I thought the center pin was the ground for the injectors. When unplugged they are not grounded.
 
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Old Oct 24, 2010 | 10:09 PM
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Thanks gentlemen. I figured that would be the case since I'm measuring resistance but I'm no electrical guru by a long shot.
 
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