Question about Hyundai Motor 2002 Elantra

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Engine running hot and air conditioning not working

Yesterday the air conditioning went out when my wife was driving the car. Today I noticed that the the temp gauge was all the way up on high. I stopped in to get an oil change, it was 8 miles before my 3000 recommended change and they topped my coolant off. Car is still running at or near high and ac is still not working. Went I start the car the ac will run for a couple of minutes and then cut out. Are these problems related?
My cousin suggested that I check the thermostat,

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  • rodman24 Jun 23, 2008

    yesterday the air conditioning went out when my wife was driving the hyundai elantra 2002. Today I noticed that the the temp gauge was all the way up on high. I stopped in to get an oil change, it was 8 miles before my 3000 recommended change and they topped my coolant off. Car temp is still running at or near high and a/c is still not working. When I start the car the a/c will run for a couple of minutes and then cut out. Are these problems related?
    My cousin suggested that I check the thermostat,

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  • Anonymous Jul 20, 2008

    I drove my elantra today- ran fine, then the AC stopped and it began overheating. I stopped several times and it cooled down and then began to overheat again. Firestone said the had gasket and need the top half of engine overhauled for about 1400.00. I said no and had it towed it to another shop.

  • rickstehr Aug 22, 2008

    Same issue today.

    A/C stopped blowing cold air and the engine began to over heat. Its also a 2002 with under 60K miles.

    Could it be a simple thermostat?



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Any time your car overheats, you need to shut it down ASAP or you can melt the aluminum parts of the engine or crack a head gasket, a repair which is the automotive equivalent of open heart surgery.
The AC cuts out to protect the engine from heating even more. But what you can do to bring down the engine temperature is to switch on the heater, but even this is only advisable for a couple miles or so until you get to a repair station. At this point, your check engine light should have been on. Any time that light is on and you don't know the reason, you need to call roadside assistance if you are not within 5 or 10 minutes of a safe place to pull over.
If the thermostat sticks in the closed position, it means that no matter how much coolant is in the reservoir it is not able to circulate freely through your engine. The thermostat can also get stuck in the open position, meaning the car won't warm up when you turn the crank (car runs too cold).
According to some car care guides, the thermostat should be replaced every two years. It is a VERY cheap part, but if it fails and you continue driving the car in an overheated state, you might be looking at a new car and/or a new engine. Running your car overheated is not much better than running your car with no oil in it. Those are two surefire ways to fry the engine.

Posted on Oct 25, 2008

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    NewsView Sep 11, 2009

    FYI: Thermostat failures are VERY common on Elantras. If the car is heating up, it is NOT an AC problem. You need to replace the thermostat before you drive it another day — or even, possibly, another mile.

    If you don't want a repair bill nearly equal to the value of your car, pull over immediately and call for a tow.


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Turn the air conditioner to the "on" position and set controls to the coldest setting. Start the engine and allow to idle. Then open the hood and inspect the clutch at the front of the compressor, is it turning? "engaged" if so, the system has enough refrigerant to activate. If the system is low on refrigerant it will not work properly. In this case an air conditioner recharge kit is needed to recharge the system.

Posted on Jun 23, 2008


The thermostat needs replaced first. Have replaced mine more than once.Very Very important on these [or any model] Then check A/C

Posted on Jun 24, 2008

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