Coolant Temp Sensor R/R
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Thread: Coolant Temp Sensor R/R

  1. #1
    FRESHMAN ROVER
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    July 26th, 2009
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    Coolant Temp Sensor R/R

    Hello all,

    I recently purchased a replacement coolant sensor due to a CEL I received a few weeks ago. Would anyone have any tips, pics or instructions on removing and replacing the coolant sensor?

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  3. #2
    FRESHMAN ROVER
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    Re: Coolant Temp Sensor R/R

    What does it do?

  4. #3
    FRESHMAN ROVER
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    Re: Coolant Temp Sensor R/R

    Quote Originally Posted by milroy View Post
    What does it do?
    I don't remember what the code detail was exactly but it was something along the lines of coolant sensor voltage below threshold. Seemingly as a result of the faulty sensor, the temp gauge rarely ever makes it up the the middle range.

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  6. #4
    FRESHMAN ROVER
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    Re: Coolant Temp Sensor R/R

    Any input here? I guess I'll try following rad hoses and hopefully I'll run into it.

  7. #5
    JUNIOR ROVER
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    Re: Coolant Temp Sensor R/R

    Quote Originally Posted by TSTARKZ123 View Post
    Hello all,

    I recently purchased a replacement coolant sensor due to a CEL I received a few weeks ago. Would anyone have any tips, pics or instructions on removing and replacing the coolant sensor?
    Here's what I found-- for the 4.4 L--

    "ENGINE COOLANT TEMPERATURE SENSOR (ECT)
    The sensor is located at the front of the engine in the water pipe below the throttle body. The ECT sensor is a thermistor used to
    monitor the engine coolant temperature. The engine coolant temperature sensor is vital to the correct running of the engine as a
    richer mixture is required at lower block temperatures for good quality starts and smooth running, leaning off as the temperature
    rises to maintain emissions and performance.
    The sensor has an operating temperature range of -30 Degrees Celsius to 125 Degrees Celsius. When a defective coolant sensor
    is detected, the ECM uses the oil temperature sensor value.

  8. #6
    FRESHMAN ROVER
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    July 26th, 2009
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    Re: Coolant Temp Sensor R/R

    Quote Originally Posted by arby View Post
    Here's what I found-- for the 4.4 L--

    "ENGINE COOLANT TEMPERATURE SENSOR (ECT)
    The sensor is located at the front of the engine in the water pipe below the throttle body. The ECT sensor is a thermistor used to
    monitor the engine coolant temperature. The engine coolant temperature sensor is vital to the correct running of the engine as a
    richer mixture is required at lower block temperatures for good quality starts and smooth running, leaning off as the temperature
    rises to maintain emissions and performance.
    The sensor has an operating temperature range of -30 Degrees Celsius to 125 Degrees Celsius. When a defective coolant sensor
    is detected, the ECM uses the oil temperature sensor value.
    Thanks a ton! I already received the replacement part and hope to install it over the weekend.

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