2000 Ford Expedition EGR system code PO104

Tiny
DUKER
  • MEMBER
  • 2000 FORD EXPEDITION
  • V8
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
There is plenty of vacuum to the EVR but it is never applies vacuum to the EGR. Where does this signal come from for the EVR to apply vacuum to the EGR valve? I have replaced EGR valve, pressure sensor, and EVR. Thanks
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Saturday, February 20th, 2010 AT 12:43 PM

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Tiny
DOCFIXIT
  • EXPERT
Signal comes from PCM wiring O.K. Connection good?
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Saturday, February 20th, 2010 AT 1:04 PM

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