Question about 1984 Nissan Pickup

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High idle in cold weather

I have a 1984 Nissan 4X4 that just started idling high once the temp dropped below freezing. It has high miles but regular maintenance. Manua, carbureted engine. I noticed that once it is VERY warmed up (like driving for at least 30 mins straight) is will return to normal. Any help would be appreciated.

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  • a_c_t Dec 27, 2008

    Thanks Ricko.
    I haven't had this truck too long so wasn't sure. Gracias!


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This is normal for a car of this age
carburetor type motors have a automatic choke
this is activating when you start your car as it is so cold
i would not worries about it
it is designed to make it easier to start your car when it is cold my car dose the same thing
hope this helps
ricko

Posted on Dec 27, 2008

  • ricky horwood
    ricky horwood Dec 28, 2008

    your welcome
    just to explain a bit more as i did not do a very good job
    now when i say automatic choke i mean it turns off and on my its self
    this dose not mean that it is electronic
    it is mechanical like a non electric cooling fan in a car
    once the motor is warm it loosens the choke to return back to normal idle speed
    when it is cold it tightens and causes the choke to come on
    hope that explains
    thanks for the rating
    ricko


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