Problem of the day :)
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HT4100 4.1, 4.5, 4.9 Discussion, Problem of the day :) in Cadillac Engine Technical Discussion; I got the heater core bypassed last month after all the antifreeze was leaking into the passenger's side of the ...
  1. #1
    nycnftm is offline Cadillac Owners Fanatic
    Automobile(s): 1983 Eldorado
    Join Date
    Jan 2008
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    Problem of the day :)

    I got the heater core bypassed last month after all the antifreeze was leaking into the passenger's side of the car. Noticed yesterday that under the mat on the driver's side it is soaked with antifreeze. I do not have any leaking antifreeze on the ground, just onto the carpet. Any idea where it could be coming from and why? I guess I will bring it to where they did the heater core bypass, but still would like to find out the problem first.
    Andrew and his 83 Eldorado

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  3. #2
    ehall's Avatar
    ehall is offline Cadillac Owners Connoisseur
    Automobile(s): 1985 Sedan DeVille
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    Re: Problem of the day :)

    Could be the heater control valve although I would imagine that's where they did the bypass.

  4. #3
    HUF's Avatar
    HUF
    HUF is offline Cadillac Owners Connoisseur
    Automobile(s): 1995 FWB 100,*** miles CURRENT. 1991 Seville 175,000 SOLD
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    Re: Problem of the day :)

    Whatever remained in the core leaking down?

  5. #4
    nycnftm is offline Cadillac Owners Fanatic
    Automobile(s): 1983 Eldorado
    Join Date
    Jan 2008
    Posts
    101

    Re: Problem of the day :)

    "Whatever remained in the core leaking down?"

    That's what I think, but it was tied off 3 weeks ago or about 200 miles ago. Will find out and update here tomorrow.

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