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Thread: Normal Coolant temperature of Car in summer

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    Default Normal Coolant temperature of Car in summer

    AOA

    I hope all of you are fine. I have a 2005 honda city M/t and it is the same car that came without a heat guage. I was looking for ways to install a heat guage in the car and ended up buying an OBD II adapter that plugs in the OBD II port and connects via bluetooth to my mobile.

    Now what I have observed is that the green light remains on till the coolant temperature reaches 54C
    The radiator fan turns on at around 95-96C, and it lowers the temperature to 92-93C, and the maximum temperature recorded temperature till date is 97C(these days maximum temperature in lahore is around 37C). With AC on the maximum temperature the car attains is 92C it does not go beyond this with AC on .

    I want to ask experts that are these normal operating temperatures of coolant in a car or is my car heating too much


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    perfectly normal.
    Keep a cool head and wear seatbelts!

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    Quote Originally Posted by spectra View Post
    perfectly normal.
    Do you know what is maximum temperature at which there is no danger of heatup so that I can set my engine heatup alarm at that temperature and once the car reaches the temperature I can take corrective measures.

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    Try to find out when H0nda flashes the red light. I think it will be around 115-120. You can put an alarm for 105-108 to be completely safe because i have seen my car (nissan sunny) goung as high as 108 in Pakistan and that is when fan goes to second speed (faster).
    Keep a cool head and wear seatbelts!

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    Quote Originally Posted by spectra View Post
    Try to find out when H0nda flashes the red light. I think it will be around 115-120. You can put an alarm for 105-108 to be completely safe because i have seen my car (nissan sunny) goung as high as 108 in Pakistan and that is when fan goes to second speed (faster).

    When honda flashes red light na bhai na
    . BTW I never knew the radiator fan has 2 speeds. Well I will set it to 100C initially and wait and see what it does on more hotter days like 45C. BTW my car has auto fan and thermostat involves and these days it takes about 4-5kms of drive to reach 80C, is that normal

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    Not all cars have dual speed fans. Yours will be single speed. 100 is low and you might hear it once in a while in slow traffic.
    Keep a cool head and wear seatbelts!

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    Its perfectly fine, don't mess with it and don't try to light the red sign. Overheated honda's are bad news.
    Run the car with proper coolant and replace every 100k kms or 5 years.

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    Obd scangauge installed in 2014 civic
    blue indicator stays on till 52*C
    haven't checked when the fan kicks in but sometimes my car goes to 100*C.
    especially when idling without ac. Fan usually cools it to 93-94*.
    normal running temp is fix 88*C. When ac is on while idling, temp remains at 88*C

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    recorded from civic 02 vti oriel prosmatec using ODB II bluetooth adapter

    as high as 98 deg C. and this alarmed me too
    -

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    Sounds about right.

    If you push it really heard like shifting around 5 RPM a few times.... it will reach 105-106... slow down and the temp should stabilize between 98-100.

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    87-88 degrees fixed on my 8th gen civic..I hope thats normal:-)

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    Quote Originally Posted by fahadwizz View Post
    Sounds about right.

    If you push it really heard like shifting around 5 RPM a few times.... it will reach 105-106... slow down and the temp should stabilize between 98-100.
    Pushing the car to its limits hardly affects the coolant temp in my case
    idling without the ac on is when the coolant temp hits high values

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    Quote Originally Posted by AsFand26 View Post
    Pushing the car to its limits hardly affects the coolant temp in my case
    idling without the ac on is when the coolant temp hits high values
    Check you fans?

    I've kept idling for 30-45 minutes with obd hooked in and the temp stays under 90. it goes up when i push real hard. BTW i am talking about 2005 Civic EXi

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    aah HONDA another lawn mower sorry.
    - www.crackwheels.com - A skilled Dictator is much more beneficial to Country......than a Democracy of Ignorant people

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    My car's temp always shoots to 98-100 and then comes back down
    its pretty normal behaviour cause my previous 2010 corolla used to do the same
    you must have been idling with the air con on. With the air con, the temp stays at 88 on my civic on idling.
    used to stay around 88-90 on my corolla too.....while idling.......with ac on.
    civic 2014

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    Yesterday I went drop someone at airport. The time was 12 am night. While going to airport since at night temperature was moderate I kept ac at minimum. The coolant temperature shot to 98 degrees. Another thing I noticed that when ac is on the radiator fans donot turn on on their rather they only start when compressor is on. What I meant to say is that they should not turn off if they temperature is 98 degrees.
    So I turned ac off and radiator fan started as it should and reduced the temperature to 95 degrees.
    On return journey to home the temperature remained in 97-98 degree bracket until that overhead bridge where I accelerated car at high revs as soon as I reached middle of the bridge the coolant was 101 degrees. Ac was on and I turned it off the temperature went back to 95-96 bracket and stayed there
    One thing I would like to mention here is that when I drive car at noon when temperature is in excess of 40 the temperature does not cross 92-93 degree bracket as the compressor is running all the time so the radiator fans.
    The thing I would like to ask is that since the coolant temperature was more than 95 degrees the temperature for auto fan start why the fan was not running when the ac compressor tripped

    Sent from my GFIVE President(G9) using PW Forums mobile app

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    Quote Originally Posted by a_n_memon88 View Post
    Yesterday I went drop someone at airport. The time was 12 am night. While going to airport since at night temperature was moderate I kept ac at minimum. The coolant temperature shot to 98 degrees. Another thing I noticed that when ac is on the radiator fans donot turn on on their rather they only start when compressor is on. What I meant to say is that they should not turn off if they temperature is 98 degrees.
    So I turned ac off and radiator fan started as it should and reduced the temperature to 95 degrees.
    On return journey to home the temperature remained in 97-98 degree bracket until that overhead bridge where I accelerated car at high revs as soon as I reached middle of the bridge the coolant was 101 degrees. Ac was on and I turned it off the temperature went back to 95-96 bracket and stayed there
    One thing I would like to mention here is that when I drive car at noon when temperature is in excess of 40 the temperature does not cross 92-93 degree bracket as the compressor is running all the time so the radiator fans.
    The thing I would like to ask is that since the coolant temperature was more than 95 degrees the temperature for auto fan start why the fan was not running when the ac compressor tripped

    Sent from my GFIVE President(G9) using PW Forums mobile app
    A Dig but since summers are around the corner, this will be one of the most "discussed topic"

    I recently ran into some issue with the heater core leakage. Now its like the chicken or the egg got me to re asses my cooling system capabilities. So i hooked the good old bluetooth adapter and have been running torque since the last couple of days.

    Here are the observations.

    1. Morning Temps .. without AC - 88-97 (97 after 20 minutes of drive in traffic and some 5k hits towrads the end of journey)
    2. Evening Temps .. without AC - 92 - 103 (103 being the max i reached at the end of journey during 5-7 minutes of idling )

    With AC temperature stays between 90 - 95

    Since the car is about 135k driven and coolant is also pretty old now(looks a little rusty due to water contamination )

    I am thinking to get the following maintenance done from Honda

    Water Pump replacement
    Full cooling system service
    Brand new Honda coolant

    Lets see...

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    I Have City basic 1.3 2016, and i have nooooo idea what u guys are talking about. where to look for the temperature? How to know when the fan turns on or not ?? Etc etc whats an obd? Where to get it from? Do i even. Need it?

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