Question about 1986 Mercury Sable

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No heat in the dead of winter please help! I was tricked i was a walking target. i did not do any research was running late did not check with a mechanic of my own. can you please help me.

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Hi, lazzieb2000. There are probably cars that do this electronically now, but usually the knob or slider that regulates hotter and cooler is connected to a wire in a sleeve, the other end of which opens and closed (respectively) a valve that regulates the amount of (hot) coolant that passes through the heater core.

If that wire is not connected, well--because it's bent--or at all, with the valve, you will have no heat.

In most cars, you have to stand on your head and look up under the dashboard to see this stuff. But if you can find the valve (usually black plastic with a silvery arm on it) and move it by hand and thereby create heat, you've found the problem.

Good luck.
Ken

Posted on Dec 22, 2008

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