All 8 glow plug circuit codes
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Trailering
Joined: Nov 2023
Posts: 21
Likes: 7
From: Tennessee
All 8 glow plug circuit codes
Started Excursion today, 58 degrees outside, and had some rough idle. Left it running for a minute and then the CEL came on with all 8 glow plug circuit codes: P0671, P0672, P0673, P0674, P0675, P0676, P0677, P0678. Parked it and drove something else today. My assumption would be the GCPM since they all went at once, should I be looking elsewhere or pull the trigger on ordering the part?
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Trailering
Joined: Nov 2023
Posts: 21
Likes: 7
From: Tennessee
Yes, ran the glow plug test and got it to throw 2 additional codes - P0683 & P0670.
Ohm'd the plugs from the harness at the GPCM itself and all glow plugs are showing 0.3 ohms so they all look good
Ohm'd the plugs from the harness at the GPCM itself and all glow plugs are showing 0.3 ohms so they all look good
Lead Driver
Joined: Jun 2004
Posts: 6,326
Likes: 585
From: Amarillo, TEXAS!
A GPCM can be had for about $150 for Motorcraft, or less for other brands on Rock. I guess it depends on how much trouble shooting you want to do. Have you already checked all the fuses with a meter?
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rblaine9000
1999 - 2003 7.3L Power Stroke Diesel
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Feb 8, 2011 07:36 PM
