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  1. #1
    Junior Member
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    Feb 2016
    Name
    Rex Smith
    Location
    North Texas
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    2

    Changed radiator after a leak - heater core leaking now

    Hello folks,

    Last month I noticed a coolant leak from one of the crimped seams of the radiator on my 1991 F150 (6-cyl, flatbed - 95,000 original miles).

    Since it is winter, and my off-seasonfor work - I went ahead and changed the radiator, as well as all the coolant. (And the thermostat and the radiator cap and upper and lower hoses)

    Now - a month later, after a 4-hour drive, I noticed my reservoir is a little low. So I topped up the fluid again... The evidence is showing of a heater core leak. (Suddenly getting fogged windshield, and a small puddle of coolant on the passenger floorboard).

    Changing the heater core looks to be a straightforward job on this F150 - but my real question is about timing of the 2 leaks. What are the odds of BOTH the radiator and the heater core developing leaks within 30 days of each other? Shaking my head....

    Rex S.

    Sent from my STUDIO X PLUS using Tapatalk

  2. #2
    Junior Member
    Join Date
    Feb 2016
    Name
    Rex Smith
    Location
    North Texas
    Posts
    2
    Changed the heater core this morning. Less than an hour to complete. Crossing my fingers now.

    Sent from my STUDIO X PLUS using Tapatalk

  3. #3
    Chief Moderator Jersey_Joe's Avatar
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    Jul 2012
    Name
    Joey
    Location
    New Jersey
    Posts
    19,016
    How did unmake out?

    5Star tuned.....

  4. #4
    Junior Member
    Join Date
    Nov 2018
    Name
    stan
    Location
    US
    Posts
    6
    Quote Originally Posted by rvsmith70 View Post
    Hello folks,

    Last month I noticed a coolant leak from one of the crimped seams of the radiator on my 1991 F150 (6-cyl, flatbed - 95,000 original miles).

    Since it is winter, and my off-seasonfor work - I went ahead and changed the radiator, as well as all the coolant. (And the thermostat and the radiator cap and upper and lower hoses)

    Now - a month later, after a 4-hour drive, I noticed my reservoir is a little low. So I topped up the fluid again... The evidence is showing of a heater core leak. (Suddenly getting fogged windshield, and a small puddle of coolant on the passenger floorboard).

    Changing the heater core looks to be a straightforward job on this F150 - but my real question is about timing of the 2 leaks. What are the odds of BOTH the radiator and the heater core developing leaks within 30 days of each other? Shaking my head....

    Rex S.

    Sent from my STUDIO X PLUS using Tapatalk
    Electrolysis is causing the issue maybe

    Sent from my SM-N950U using Tapatalk

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