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    usnreta1's Avatar
    usnreta1 Posts: 2, Reputation: 1
    New Member
     
    #1

    Aug 3, 2009, 01:18 PM
    Idle Fluxuates in cold Weather
    I have a 1997 Honda Accord SE. In cold weather when I start the car, the Idle fluxuates until the car is heated. I have to run the car until the temperature comes up, then it's OK. What could this be? Thanks,, Bob
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Aug 3, 2009, 02:21 PM

    . Clean the Idle Air Control Valve (IACV), throttle plate, and throttle body:

    https://www.askmehelpdesk.com/cars-t...ml#post1054149

    . Replace the Engine Coolant Temperature (ECT) Sensor, which affects fuel injector pulse width. The ECT Sensor is a temperature dependent resistor (thermistor), whose resistance decreases as the engine coolant temperature increases. It provides a richer mixture when cold, leaner mixture when hot. They become corroded, due to not changing the coolant frequently enough, flood the engine, and waste a tremendous amount of fuel. Look for a sensor with two wires going to it, located under the distributor.
    usnreta1's Avatar
    usnreta1 Posts: 2, Reputation: 1
    New Member
     
    #3

    Aug 3, 2009, 04:40 PM
    Quote Originally Posted by TxGreaseMonkey View Post
    . Clean the Idle Air Control Valve (IACV), throttle plate, and throttle body:

    https://www.askmehelpdesk.com/cars-t...ml#post1054149

    . Replace the Engine Coolant Temperature (ECT) Sensor, which affects fuel injector pulse width. The ECT Sensor is a temperature dependant resistor (thermistor), whose resistance decreases as the engine coolant temperature increases. It provides a richer mixture when cold, leaner mixture when hot. They become corroded, due to not changing the coolant frequently enough, flood the engine, and waste a tremendous amount of fuel. Look for a sensor with two wires going to it, located under the distributor.
    Thanks for your help in this matter. I'll replace this part before it gets cold

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