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1997 - 2006 Expedition & Navigator 1997 - 2002 and 2003 - 2006 Ford Expedition and Lincoln Navigator Discussion

electrical ,coil

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Old May 30, 2007 | 11:37 PM
  #1  
bigtwo's Avatar
bigtwo
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Unhappy electrical ,coil

No start, checked coils,they were not firing ,replaced both sides
still no luck ,checked plugs to coils ,passenger side coil plug checked out fine
center hot, left and right sides sent pulse signals (grounded) driver side
center hot ,right sent pulse signals cranked,but left wire sent solid signal
when i disconnected the driver side coil truck started but ran rough,
"only running 4 cyl" but will not start if plugged in, CAN someone point in the right directions ?
 
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Old Jun 20, 2007 | 10:52 PM
  #2  
amish77's Avatar
amish77
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Joined: Oct 2004
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From: Seneca, SC
Welcome big two,

I'm thinking it's the coil module. If the controller isn't up to snuff then you're gonna have these problems. If the plugs are good (swap the ones that are firing for the ones that aren't) and the coils are good two (same check) then I'd say module.
 
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