Steam blowing out of the heat and air vents

Tiny
BOOLADOG
  • MEMBER
  • 2002 FORD F-150
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 292,000 MILES
When I turn on my heater or air conditioner I can see steam blowing out of the vents. Does my heater coil have a leak or what might be the problem? Thanks, Jay
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Tuesday, November 15th, 2016 AT 4:37 PM

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Tiny
KASEKENNY
  • EXPERT
Unfortunately this means you most likely have a heater core leak even though you can see it or find coolant.

If the smell is sweet then this is coolant getting turned to steam.

I am attaching the process below for the heater core on the vehicle listed on this post.

Let us know if you have questions Thanks
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Monday, April 19th, 2021 AT 3:12 PM

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