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Join Date: Dec 2009
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120 seconds is a curious number as that's the maximum time the glow plugs will stay on. As the engine warms up, you would expect that time to decrease. I can't imagine the truck would only run if the glow plugs were hot. That would indicate such low compression that you aren't achieving combustion temperature without their help. I think you are going to need to put a scanner on it and watch what happens as it stalls.
2003 F-250 XLT Crew Cab 7.3L, Chrome BigTex Grille Guard, Quad pillar - 3 ISSPRO gauges (trans, pyro, boost) and DP-Tuner F6; Roush fuel pressure / temperature / oil pressure gauges, Ford Severe Duty AIS, 31 row 6.0 transmission cooler, ScanGauge II, Marinco mod, Walker BTM
I wonder if clouds ever look down on us and say, "Hey, look - that one is shaped like an idiot!"