High Idle on 85 CRX When Engine is cold

Discussion in 'General Motoring' started by XxLicherxX, Oct 9, 2005.

  1. XxLicherxX

    XxLicherxX Guest

    Hello everyone,

    I have a 1985 Honda CRX SI. The car is running great (Just turned
    340,000 miles on odometer today!!), however I am experiencing a strange
    issue. When the engine is cold, the car will idle at about 2500 RPM.
    Once the engine has heated up, the idle goes back to normal. I have not
    noticed anything degradation in power or acceleration.

    I spoke with a trusted mechanic and he told me he thought it might be
    related to a sensor, but he didn't have the equipment to diagnose it
    for foreign cars. Has anyone here seen or experienced this issue

    XxLicherxX, Oct 9, 2005
  2. XxLicherxX

    Elle Guest

    Sounds a bit high for a "warming up" RPM.

    As a start, check the level in the reservoir with the car warmed up. Should
    be at about the max line. Then, after the car has sat all night and is
    COMPLETELY cool, make sure the coolant level is topped off underneath the
    radiator cap.

    Next, do a purge of air of the cooling system. Use the manual. These are
    free online at www.autozone.com . May take a half hour or more for the fan
    to come on during this procedure.
    Elle, Oct 9, 2005
  3. XxLicherxX

    XxLicherxX Guest

    Hmm, that could be it.... I have a slight crack in my radiator, right
    at the top where you fill the reservoir. I loose a bit of coolant out
    of that everytime I fill it up. I did top it off the other day and if I
    remember right, the next day it didn't idle high. I will try refilling
    it again and see if it has the same effect.
    XxLicherxX, Oct 10, 2005
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