Throwing Glow Plug Code - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 01-02-2013, 07:56 PM Thread Starter
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Throwing Glow Plug Code

Left the bar Saturday night and the check engine light came on. Plugged in my code reader when I got home and it says P0675 CYLINDER 5 GLOW PLUG CIRCUIT. Am I safe to assume its just a bad plug that needs replaced? Or might the problem lie somewhere else? Its supposed to be in the 30's saturday so If its just needs a new glow plug, im eager to pull that mo fo and get it done. Thanks guys.
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post #2 of 4 Old 01-02-2013, 08:03 PM
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Probably just a plug. You'd be better off to replace all 4 on that bank since you have to remove the glow plug harness anyway. Also should probably have a new harness on hand since most likely you will destroy the original when removing.

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post #3 of 4 Old 01-02-2013, 08:05 PM
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Yea its ither the glow plug or harness plug. Check the resistance of the glow plug and the check the ones next to it for a comparison. They are easy enough to change 5/8 deep socket IIRC.
If you have a inductive amp meter you can compare the amp draw per side and see if you short amperage, 10-12 amps each is the draw.
The harness splits away for each bank so you just compare both sides.

Try taking the truck back to the bar and see if it clears when you leave for home again ??


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post #4 of 4 Old 01-03-2013, 03:55 PM
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The resistance of the plugs are pretty low, with a circuit code you should be able to pick up the offending plug with an ohm meter. test it at the harness, if you find high resistance replace all the plugs and the harness on that side.

-Matt

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