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Old Dec 18, 2017 | 09:55 AM
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P0677

Hey everyone looking for a little advice........ fought with a battery issue for several weeks. Now replaced both with Interstate's 800CCA, then 2 new alternators, all with in 2 weeks of each other. Everything was good for about 3 or 4 months, then my old girl popped a check engine light which led me to FICM. Replaced that last Friday and now another check engine light which brought me to "P0677" which according to the lovely Google tells me #7 cylinder Glow plug circuit. Wondering if its likely the glow plug it self OR....... I'm getting that the glow plug isn't a real tough replacement BUT just looking for what might be past experience may be from the group. Any help is well appreciated.
 
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Old Dec 18, 2017 | 10:38 AM
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My guess is the glow plug but it could be the harness or glow plug controller.
 
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Old Dec 18, 2017 | 01:33 PM
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Diesel tech Ron has a real simple glow plug test using a test lamp of volt meter.
 
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