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Heater core

Tiny
EDINGTON2016
  • MEMBER
  • 1998 LINCOLN NAVIGATOR
  • V8
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
This chemical smelling fog coming out from under dash and windows will not stay defogged. Is this heater core?
Wednesday, November 1st, 2017 AT 11:58 PM

5 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,471 POSTS
Does it smell somewhat sweet and the film on the glass is sticky? If so that is a failed heater core. On that vehicle you need to remove the dash to get to it.
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Thursday, November 2nd, 2017 AT 12:57 AM
Tiny
EDINGTON2016
  • MEMBER
  • 3 POSTS
Thank you. Yes, smells almost like waffles. What will happen next? I have to drive it to work every day. May be a week before I can get it fixed. Should it run fine?
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Thursday, November 2nd, 2017 AT 1:03 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,471 POSTS
I would probably go under the hood and loop the core out of the system. Breathing that stuff can make you really sick. At the very least turn the temperature to cold and keep a window open if possible. The issue is that it could leak much worse at any time and dump hot coolant into the vehicle. A way to stop that would be to get a couple hose clamping pliers and just pinch the hoses closed. Something like what is pictured would work. Plus they would allow you to remove the core without draining the cooling system.
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Thursday, November 2nd, 2017 AT 3:35 AM
Tiny
EDINGTON2016
  • MEMBER
  • 3 POSTS
Oh my goodness I cannot thank you enough!
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Thursday, November 2nd, 2017 AT 1:09 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Steve is one of our best ;)

Good to hear, please use 2CarPros anytime we are here to help.

Cheers, Ken
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Friday, November 3rd, 2017 AT 2:04 PM

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