Heater control valve in a 1990 Eldorado
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Cadillac Seville / Cadillac Eldorado Forum Discussion, Heater control valve in a 1990 Eldorado in Past Cadillac Vehicle Discussion; Can anyone tell me where the heater control valve is located in a 1990 Eldorado? I am only getting warm ...
  1. #1
    mhscspo is offline Cadillac Owners Member
    Join Date
    Jan 2004
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    Heater control valve in a 1990 Eldorado

    Can anyone tell me where the heater control valve is located in a 1990 Eldorado? I am only getting warm air coming out, or could it be the heater core that's gone bad and if so where is the heater core?


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  3. #2
    elwesso's Avatar
    elwesso is offline Cadillac Owners Master
    Automobile(s): 2005 CTS-V, 1994 Infiniti Q45
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    Re: Heater control valve in a 1990 Eldorado

    Heater core is the problem.... As far as I know there is NO heater control valve, all coolant is going through it all the time, mix doors regulate the amount of air passing through it......

    Heater core is a common problem on your car, search the forums for more info!!!

    Welcome to the forums, thanks for signing up

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