2003 Ford Expedition Unusual Symptom

Tiny
BILLG12
  • MEMBER
  • 2003 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 134,000 MILES
From a cold start, engine temperature reaches normal then spikes high with hi temp light on dash after ~10 minutes; heaters (front and rear) blow cold; after 15-30 seconds, engine temperature returns to normal and heaters function normally; carbon monoxide detected in engine coolant; thermostat replaced - no change in symptoms
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Tuesday, November 11th, 2008 AT 11:39 PM

1 Reply

Tiny
BLUELIGHTNIN6
  • EXPERT
Could be a faulty thermostat.
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Wednesday, November 12th, 2008 AT 12:02 AM

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