Join Date: Apr 2007
Location: San Dimas, Ca.
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Glow plug circuit code
I was trying to chase down a miss. I wiggled the connector on the outside of the left side valve cover to check it for tightness. The next time I started the truck the MIL came on. The code is P0678, Cylinder 8 Glow Plug Circuit. Does this mean there is a problem in the wiring circuit, since it showed up immediately after I wiggled the connector, or is it just coincidence and the glow plug actually went bad when I checked the connector on the valve cover? Thanks for any help.
2002 Ford F-350 Lariat Crew-Cab Long Bed 7.3L PSD Automatic 4X4 SRW
Pillar Mount Gauges, Bilstein Shocks, Tow Beast Hitch
AMSOIL By-Pass Oil Filter, AirRaid Intake w/AMSOIL Dry Filter
Pinnacle 4" Exhaust by Jerry Jardine
Dieselsite 6-pos chip, High-Pressure Oil Cross-over, AIH Plug
Mechanical Wastegate Controller, BRV
Coolant Filter, 203 Stat, EVANS NPG+ Waterless Coolant
Trans Command, Ext. Trans Filter, Mag-Hytec Pan & Rear Diff Cover
AMSOIL Lubricants and Filters
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Last edited by johns4dor; 04-29-2009 at 11:16 AM.
Reason: misspelled words