Mechanics

HEATER CORE

1997 Ford Expedition • V8 4WD Automatic • 140,000 miles

I have a 97 ford expedition that I have replaced the heater core in the front 2 times about 6 months apart im stumped as to what could be causeing it. Any help would be great.
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Emorse
May 15, 2011.




Changed it because it was leaking or because it keeps plugging up?
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PROTECH1980
May 16, 2011.
Its leacking almost like there is a build up of preasure. Tried flushing it both times too

Tiny
Emorse
May 16, 2011.
Sounds like this could be caused by a chemical reaction called electrolysis within the coolant, check this link: http://www.4s.com/Upload/Four%20Seasons/documents/Tech%20Tips/English/4S%20350%20ELECTROLYSIS.PDF

PROTECH1980
May 16, 2011.
I havent put the new one in yet but I will check that it said something about a nutralizer what would you ecomend to use if that is what I need?

Tiny
Emorse
May 16, 2011.
Ok I tested the electrolysis level and I got a reading of.200 VDC
im going to clean the grounds anyway for safety but could there be anything else that would cause it

Tiny
Emorse
May 16, 2011.

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