01 Hyundai Elantra Overheating but Temperature Gauge Not Reading Hot

There are a few reasons why your Hyundai Elantra would exist overheating when idling.  The well-nigh common ones include a bad thermostat, water pump, electric fans, and low coolant level.  This guide is intended to aid yous observe the cause of this overheating in the near efficient way possible.  And so, let'southward start with what'southward like shooting fish in a barrel and take it from there.

If your Elantra is running and driving fine, but you end upwards stopped somewhere and information technology begins overheating when idling, this guide is for you.  If information technology's overheating at all engine speeds, cheque out Hyundai Elantra Overheating.

Make certain to inspect and work on the engine when information technology is cold.  Electric fans tin kicking on at any fourth dimension.

Elantra:  Overheating When Idling Causes and Solutions

ane. Low Coolant

While it seems counter intuitive, when your Elantra is low on coolant may run ok with wind hitting the radiator, just when idling there's just not plenty coolant to properly absurd the engine.

Solution:  Fill up the radiator and coolant reservoir back up.  Never practice this when the engine is warm.  The cold engine coolant can "shock" the block and cause a crack or even a freeze plug to drib out.

Filling it back up is non the ready.  The coolant had to leak from somewhere.  Look under the vehicle when it is parked and see if you tin run across puddles of coolant.  If there are, start directly to a higher place those puddles in your search.

A coolant leak is ordinarily caused by:

• Cracked Hoses–  At that place are 2 hoses that come and go to your Elantra'south radiator.  One sends the hot coolant back from the engine to the radiator to be cooled.  And the other one sends the coolant back to the water pump to cool the engine.  These hoses can crack with historic period.  Take a look at them and see if they accept been leaking.  Even if they are dry, they should nevertheless accept a chalky look to them where they have been leaking coolant (it's mineral deposits).
• Radiator Leak– Have a look at the radiator itself.  Determining if in that location is a leak is going to depend a lot on whether or non you can hands see the radiator.  If it has a big gouge on one of the fins, or a streak going downwards it that looks similar coolant has dripped from it, there's your leak.  Here's how to find coolant leak.
• Water Pump– There are gaskets between the water pump and the engine cake.  If one of these gaskets fail, so there's going to exist a leak.  This is often a hard ane to see, because all of the accessories (alternator, ability steering, serpentine belt) are going to obstruct your view.  This is often where the leak is coming from when there'due south a pool nether the center of the engine bay and you don't encounter a leak anywhere.  Here are the signs of a bad water pump in the Hyundai Elantra.

2. Bad Electric Fan

If the coolant level appears to exist fine, so the adjacent easiest thing to look at is the fan.  Most vehicles use electric fans to cool the radiator when it gets warm enough.  These fans are almost important when the vehicle is idling.  These fans can and do neglect.

Solution:  With the engine hot and idling (but non yet overheating) pop the hood open and see if the fan is turning.  If information technology is not turning at all you know you have a bad fan.

Check the fuse and fan relay to run into if they are getting power.  If they are, you'll demand to replace the fan.  Here's a proficient guide to troubleshooting a radiator fan.

three. Bad Thermostat

Next on the list is the thermostat.  Your Elantra's thermostat controls when coolant does and doesn't enter the engine.  Information technology'll either be on the block or h2o pump.

Solution:  It can be tough to tell if a thermostat is bad without just replacing it.  Does the vehicle get hot within a few minutes of driving (and the coolant is full)?  That could be enough to tell that the thermostat isn't opening all the way.  Information technology usually takes an engine a while to overheat when it is full of coolant.

You'll need to supervene upon information technology, which is about a 2/10 in mechanical difficulty.  Most likely you'll but demand a ratchet, extension, and 10mm socket.

Here'southward more than on this:  Hyundai Elantra: Bad Thermostat Diagnosis

4. Bad Water Pump

The water pump in your automobile is turned by the Elantra's engine accessory drive system.  As the engine rpm increases, and then does the speed of the water pump.  When the vehicle is idle, the h2o pump is turning slowly.

Solution: A bad water pump isn't efficient.  When the car is overheating when idling the water pump is not able to move the coolant through the radiator and back to the engine.  Y'all can exam this by putting the motorcar in neutral or park and revving the engine to about 1000 RPM under the redline for a few seconds.  Yous should see the temperature dip as the h2o pump spools up.

Replacing a h2o pump is merely as challenging as getting to it.  Which, depending on it's location, can be relatively easy or a full nightmare.

Here's more on diagnosing a bad water pump.

Honorable Mention: Temp Gauge

While your Elantra's temperature gauge is ordinarily pretty reliable, it even so is an electrical device that tin fail.  A mechanic would check the temperature of the engine manually with a heat gun in order to ensure that the gauge was reading correctly earlier tackling the repair.

When the car is overheating when idling and you Olfactory property the smells associated with a temp that is too high, you can throw the temp estimate theory out.

Determination:  Hyundai Elantra Overheating When Idling

Hopefully, this guide to why your Elantra may be overheating when idle helped you fix your vehicle.  If at that place is anything that you would like to add that could help the next person with theirs, your annotate below is most welcome.

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Source: https://www.700r4transmissionhq.com/hyundai-elantra-overheating-while-idling/

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