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Coolant leak

Tiny
MKOLICH
  • MEMBER
  • 2006 FORD TAURUS
  • 3.0L
  • V6
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
Coolant reservoir is low, maybe 1/3 full, when more coolant is added, it immediately drains down to where the fluid level was before. It's coming out somewhere near the firewall on the passenger side. The car is not overheating and there is pressure building in the system.
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Saturday, September 18th, 2021 AT 1:53 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

It sounds like the leak is from heater core or the heater core hose(s).
The heater core is located on the passenger side of the vehicle on the firewall.

It could be as simple as the hose being loose or clamp coming off.
Remember to only work on the vehicle when it is cold, as you do not want to get burnt by hot coolant.
To access the heater core you will have to remove the cowling located at the base of the windshield.

Here are couple of articles on how to replace the heater core and hoses:

https://www.2carpros.com/articles/replace-heater-core
https://www.2carpros.com/articles/replace-heater-hoses

I have attached diagrams for your reference.

Please let me know of any questions.
Thank you.
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Saturday, September 18th, 2021 AT 3:51 PM

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