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Thread: Problem EATC Heat Coming Thru Vents

  1. #16
    Join Date
    Jan 2004
    Location
    Somewhere in the N.C. Triangle
    Age
    68
    Posts
    26,250
    Quote Originally Posted by b1vjgb3 View Post
    The problem with my silver car is that the heat doesn't come on right away. I can get heat by turning the EATC up to 90 and revving the engine to about 3000 rpm and then the heat comes on.

    I suspect the problem to be either the heater control valve (don't know where it is but I have a new one) or the heater core is clogged.

    The car has just over 198,000 miles on it.
    You might have a sticking / stuck thermostat or air in the system.
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  2. #17
    Join Date
    Sep 2002
    Location
    Cape Cod, MA
    Posts
    13,676
    If revving the engine causes the heat to come up, you have an air bubble in the system. It's very common. There are numerous threads here detailing how to burp the system. If the heater core was clogged, you'd nave no (or reduced) heat all the time.

    As fastblackmerc said, there is no heater control valve.
    The Blackbird
    Trilogy #61
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    The Spruce Goose
    2004 Grand Marquis LS Limited Edition
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