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Thread: Car Heatup Problem: Civic 1997 Vti

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    Default Car Heatup Problem: Civic 1997 Vti

    The problem is that my car heats up. There was leakage from the radiator nozel which throw water to the reservoir bottel so i got it repaired through magic depoxi because the upper part of the radiator is made of plastic. My dad got the fan direct. upon inspection it is revealed that there is no thermostate installed. Today morning i noticed that water from the sides for the radiator cap is leaking. There is plain water in the radiator.

    What happens that some time the car heats up while running and when i stop the car the temprature gauge comes to normal in less then a minutes time means the car gets cool very quickly when i stop or slow the car i dont know why. on steep it gets heat up quickly.

    So from where should is start i think first will be the replacement of the radiator cap and if the problem persist what should i do. one more thing that the radiator is of civic automatic car and my car is manual Vti.


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    The problem looks in temperature sensor or gauge. It is not really heating, gauge is giving a false reading, I think.
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    Dear Change ur thermostat switch and also check ur Thermostat valve...(Check these if u have no radiator or head gas kit issue)
    It takes 8,460 bolts to assemble an automobile, and one nut to scatter it all over the road.

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    Quote Originally Posted by Xplorer View Post
    The problem looks in temperature sensor or gauge. It is not really heating, gauge is giving a false reading, I think.
    but if the problem is with guage or sensor then y it does that occassionally not everytime.

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    Quote Originally Posted by UmarSattar View Post
    Dear Change ur thermostat switch and also check ur Thermostat valve...(Check these if u have no radiator or head gas kit issue)
    s i mentioned ther is no thermostate installed the last owner has removed that. is this a problem as the mechanic was also removing it for the summer saeson but foundout that it has been already removed.

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    Just had a discussion with previous owner, he told me that he changed the radiator about 1.5 years ago because of the heatup isssue and after that he didnot face such issue. Thermostate Valve was not there when he bought the car around six years ago.

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    well if the car heats up and cools down quickly then ther is an issue with the valve ir the gauge

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    Any more suggestions from should i start

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    janab please replace radiator complete with cap naya thermostat valve flush cooling system aur replace with fresh coolant mixture only rewire the fans for auto switching ap ka masla haal ho jai ga jab yeah sab kar rahay houn tou hose pipes ki leakage ko bhi check karyeay ga cooling system mai air lock ya bubble nai hona chahyeay

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    this engine is very sensitive to heat
    once u drive a over heated engine or push it say good bye to the engine

    ur car is building up pressure which will cause the radiator to leak from weak points and make the weak hoses leak to

    if the engine is overheating with a direct fan and no valve, you have to open up the head, face it, change the gasket
    Life is short and very unpredictable just like a Quarter mile .....

  11. 22-05-2012, 04:37 PM

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    i would like to add, you should start with radiator service and repair
    what if its blocked or in bad shape at the first place?

    if that doesnt work out then go to the next step mentioned above

    i have been through all this crap
    Life is short and very unpredictable just like a Quarter mile .....

  13. 22-05-2012, 04:38 PM

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    Thanks for the suggestions.
    So m gona start with radiator service and radiator cap replacement. Also i will use coolant and see what happens.

    Should i go for switching the fan back to automatic and installing thermostate valve as well after doing the above mentioned service?

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    You need to find a proper metal tank radiator for your car, Atlas make one, Loads Ltd make one too. They are very good quality, use a new radiator cap too, and buy a new thermostat valve, also check the condition of the water pump intake pipe.

    I would suggest you first do a radiator flush with your old radiator in place, It will clean the rust in the block and head, then install a new Tstat valve and radiator. The sudden heat rise you are seeing is air trapped in the system. You should also check the condition of the small coolant tube that is welded to the valve cover breather pipe. That does corrode and cause air leaks because its a high point in the system.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

  16. 22-05-2012, 10:05 PM

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  17. 22-05-2012, 10:05 PM

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  18. 22-05-2012, 10:06 PM

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    get the radiator serviced and ask the guy to check the cap
    (let the fan be direct and valve be out) ....... drive the car hard and see if its still making trouble, u have much more work to do (sadly)
    if the car is fine, you can put the valve back and fan back to auto
    Life is short and very unpredictable just like a Quarter mile .....

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    Quote Originally Posted by hash4u View Post
    get the radiator serviced and ask the guy to check the cap
    (let the fan be direct and valve be out) ....... drive the car hard and see if its still making trouble, u have much more work to do (sadly)
    if the car is fine, you can put the valve back and fan back to auto
    thanks i have done with the radiator service thing now what is the easiest way to drive the car hard and check if its trouble free or not?

  21. 22-05-2012, 11:49 PM

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    pir sohawa with AC on in day time
    no need to drive hard on this

    (take water bottles along, plus keep a constant watch on temp gauge)
    Life is short and very unpredictable just like a Quarter mile .....

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    Quote Originally Posted by hash4u View Post
    pir sohawa with AC on in day time
    no need to drive hard on this

    (take water bottles along, plus keep a constant watch on temp gauge)
    and if i have todo it on islamabad highway or GT road near rawat?

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    Quote Originally Posted by Xulfiqar View Post
    You need to find a proper metal tank radiator for your car, Atlas make one, Loads Ltd make one too. They are very good quality, use a new radiator cap too, and buy a new thermostat valve, also check the condition of the water pump intake pipe.

    I would suggest you first do a radiator flush with your old radiator in place, It will clean the rust in the block and head, then install a new Tstat valve and radiator. The sudden heat rise you are seeing is air trapped in the system. You should also check the condition of the small coolant tube that is welded to the valve cover breather pipe. That does corrode and cause air leaks because its a high point in the system.
    if this is because of the air trapped in the system then y should i change the radiator or flush it? how air is generated in the system and y?

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    Quote Originally Posted by Farooqbash View Post
    if this is because of the air trapped in the system then y should i change the radiator or flush it? how air is generated in the system and y?
    Air is not generated its sucked in from somewhere, and you just wrote where its sucking it, the radiator cap flange and the overflow nipple - if it can leak water it can suck in air too, The overflow nipple and the pipe all the way into the bottle dipped into coolant/water should be air tight, its function is to deposit expanded hot water into the tank and suck it back once the engine cools down. If there is a leak there it will suck air instead of water because air is lighter than water. Keep in mind that a leak anywhere in the system will cause air to be sucked into the system when it cools down. Normal working pressure of the system is 1 bar - about 15 psi, the system should be checked at this pressure.

    regular epoxy wont work on the radiator tank overflow nipple, and the one that will work is quite dangerous when mixed, it can burn through your skin very easily. SO its best to either replace the top tank of the radiator or get a new radiator.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

  26. 23-05-2012, 02:07 AM

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    rev the car in 1st or 2nd gear to 6k rpm couple of times(thats enough stress for the engine)
    will heat up if things are still wrong
    and lift the hood to see if anything is leaking and temp gauge is constant or not
    Life is short and very unpredictable just like a Quarter mile .....

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