jt-morgan Posted October 21, 2005 Share Posted October 21, 2005 I have a 05 f550 6.8 that stall on decel when in park or neutral. no codes, ran oasis no ssm/tsbs reflashed pcm. no change. app,app1,app2,app3 are normal compaired to another truck with same MY and ENG. anyone seen this before? /forums/images/%%GRAEMLIN_URL%%/banghead.gif Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted October 23, 2005 Share Posted October 23, 2005 Not on a 6.8 but I have seen 5.4's do it. With mine it was always an air/fuel management concern: low fuel pressure or a bad MAF sensor. A quick look at your fuel trims would indicate this as a cause. I haven't had to work on any of the new gasoline engines with the electronic throttle control. Do they still use an IAC valve or is the electric throttle used to compensate and control idle now? /forums/images/%%GRAEMLIN_URL%%/shrug.gif I vaguely remember somebody running through several throttle plate modules for stalling on a different engine. Quote Link to comment Share on other sites More sharing options...
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