Join Date: Oct 2012
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The Fuel Injection Control Module (FICM) has lead free solder connections onthe circuit board. Due to no lead, the solder is very fragile and will develop hairline cracks. These crack prevent full electrical connectivity thus reducing the voltage in the circuit panel. If you plug the truck in for a few hours to heat the engine and oil, the heat inside the engine compartment will cause the hairline cracks to tighten up thus providing the required voltage for the engine to run properly.
It may be hard to believe this but mine was doing the same thing. Check the voltage on the FICM and see if you have a low voltage situation. You may also have a P0611 code which indicates the FICM is on its way out.
Mine was just repaired at FICMrepair.com today and is on the way back to me. I should have it Monday or Tuesday.
2004 F250 Crew Cab King Ranch Lariat FX4 Saddle Leather 6.0 L FUMOTO Valve
AIRAID 4" straight No CAT No MUFF
Nitto Terra Grapplers All Terrain LT285/75R16 10 PR Everything else pretty much stock
NEW Ranchos installed 8/15/2010
WORK IN PROGRESS - R&R EGR COOLER, OIL COOLER, THERMOSTAT, TURBO BOLTS, GASKETS, ORINGS, and adding a COOLANT FILTER WITH NEW COOLANT AND FLUSH
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