kevin phillips Posted March 12, 2009 Share Posted March 12, 2009 I have a 2007 f-350 6.0 liter with a stalling concern and restarts fine.No dtc's,removed and replaced stc fitting,no help. Checkout wiring to ficm and while checking noticed sparks coming from ficm and arcing to ficm studs with ficm unbolted.Is this a sign of a short inside to the ficm case? I have never noticed this before while testing and seems to happen when it stalls or while the engine is being cranked.Any ideas? input? thanks guys for the help. Quote Link to comment Share on other sites More sharing options...
mchan68 Posted March 13, 2009 Share Posted March 13, 2009 My money is on the FICM/injector harness (5C3Z-9D930-A) shorting out on the intake manifold studs, causing the stalling. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted March 13, 2009 Share Posted March 13, 2009 My money is on the FICM/injector harness (5C3Z-9D930-A) shorting out on the intake manifold studs, causing the stalling. You know we dont see much of THAT anymore... especially on a 2007 but I still check for it when I get one stalling or cutting out. Originally Posted By: kevin phillips ...noticed sparks coming from ficm and arcing to ficm studs with ficm unbolted. Is this a sign of a short inside to the ficm case? I dont think I have ever heard of that either! I agree with you that this might indicate a BIG problem with that FICM. Quote Link to comment Share on other sites More sharing options...
Aaron Posted March 13, 2009 Share Posted March 13, 2009 What happens if your hands are wet, and you've grounded your forearm to the cowl or the LF fender while you're leaning on it? Zzzzzzzzzzzzzzt! First thing that popped into my mind is the harness issue, also. Quote Link to comment Share on other sites More sharing options...
slim Posted March 13, 2009 Share Posted March 13, 2009 I've never heard of that either. The FICM shouldn't use the case for ground, so either the FICM is FUBAR or you have a bad ground causing the FICM to use the mounting points for a ground. Quote Link to comment Share on other sites More sharing options...
kevin phillips Posted March 13, 2009 Author Share Posted March 13, 2009 The ficm is 10 days out so i'll update when it comes in. The voltage jumping from it looks like a coil pack with the wire off.I have been all over wiggling the harness and cannot find a problem with it but it acts just like a wiring short.I'm kinda scared to mess much with it till i replace the ficm,it's quite a bit of voltage arcing around.Another thing i noticed to is the battery light in the cluster flickers when it's arcing to. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted March 13, 2009 Share Posted March 13, 2009 Kevin, have you contacted the Hot-Line about this yet? I am curious as to their opinion on the FICM arcing to ground that you are reporting. Quote Link to comment Share on other sites More sharing options...
kevin phillips Posted March 14, 2009 Author Share Posted March 14, 2009 I have contacted the hotline and they said they have no reports of it and to ignore if it dosen't seem to be the stalling problem. I have ran several with the ficm unbolted and haven't ever seen one do this before. That voltage might be dc and i'm not risking it. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted March 14, 2009 Share Posted March 14, 2009 IGNORE IT?!?! Quote Link to comment Share on other sites More sharing options...
robp823 Posted March 14, 2009 Share Posted March 14, 2009 what he said Quote Link to comment Share on other sites More sharing options...
kevin phillips Posted March 17, 2009 Author Share Posted March 17, 2009 A new ficm fixed it and stopped the voltage from arcing from it. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted March 17, 2009 Share Posted March 17, 2009 A new ficm fixed it and stopped the voltage from arcing from it. Ahhh! But did it correct the stalling concern? Quote Link to comment Share on other sites More sharing options...
kevin phillips Posted March 17, 2009 Author Share Posted March 17, 2009 It fixed the stalling also and it's gone out of my hair. thanks guys Quote Link to comment Share on other sites More sharing options...
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