Quote:
Originally Posted by timd
'02 XLT, 3.0 L. The other morning, outside temp was in the upper 30's. Driving about 10-15 minutes and noticed I was still cold. Temp knob was on HOT (max), cool/cold air coming from floor vent. Noticed engine temp gauge was still on C. Just then, I hit a bump, engine temp gauge jumped to mid-range and HOT air started coming from the floor vents. What's going on?
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Sounds like a stuck open thermostat. When was the last time it was changed???