Q: Car keeps overheating and losing antifreeze. Thermostat and hoses are all fine. What else could it be?
the car keeps overheating and losing antifreeze. i checked the hoses and the thermostat. Engine oil looks normal. there is also a rattling sound when driven. everything i checked is fine but still overheats. what else could it be?
My car has 130000 miles.
My car has an automatic transmission.
Recommended Services
| Car is overheating Inspection | $94.99 - $114.99 | Get a Quote |
Hi. I believe your Hyundai has a blown head gasket. This failure mode may not contaminate engine oil with coolant as sometimes occurs. The lost coolant may go into the cylinder or the exhaust instead. A slightly sweet smell from the exhaust pipe, with or without white smoke/steam would confirm this diagnosis. A certified technician from YourMechanic can come to your car’s location to inspect the overheating problem and pinpoint any faults that need repair.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
Get an instant quote for your car
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
What others are asking
Sulfur smell while flooring 2011 V6 Mitsubishi Outlander
First thing--start buying your gas somewhere else. Sulfur is created by sulfur burning in the gas and you are getting bad gas that has sulfur in it. That's the only thing. The only other thing that can make sulfur in...
Car turns over, but won't keep running
Hello there. It sounds like there may have been something that happened when one of the fuses was checked. When checking the fuses (https://www.yourmechanic.com/article/how-to-check-fuses-by-rocco-lovetere), if any were removed and put back into the wrong spot, it may cause this sort...
If I have a ball joint replaced on a Kia Sorento will I need an alignment?
Hello, thanks for writing in about your Kia Sorento. Any time you replace suspension components, the alignment should at least be checked and/or performed. If you need some assistance with the replacement of your ball joints (https://www.yourmechanic.com/services/ball-joint-front-replacement), consider YourMechanic. One...
My Check Engine Light is on - 2001 Toyota 4Runner
Hi there: When the traction control light comes on (and the system is not engaged manually), it's usually an indicator of a wheel sensor or transmission speed sensor issue as both of these parts are critical for monitoring and controlling...
Hi Ben I noticed That when i took the inertia switch out my truck I heard something one is rattling is that normal
The inertia switch has a metal ball inside the switch that will make contact between the two terminals of the switch when working properly. The inertia switch is designed to move the ball away from the contacts in a roll...
Car turns over but won't start
Hello. A car with the ignition switch left on typically only drains the battery. This results in a slower crank (https://www.yourmechanic.com/services/car-is-not-starting-inspection), which is not fast enough to start the combustion cycle. If you have not already attempted to jump start...
How much would a complete coolant system cost to replace in a Passat. I'm having a really bad leak and I believe its the o-ring etc.
Billing question sent to CS for the cost to replace all the components in the cooling system in a 2004 Volkswagen Passat with a L4-1.8L Turbo engine.
Car won't stop making noises and jerking .
The rough running circumstance you are describing is often a consequence of multiple faults in ignition, fuel, and air induction, not to mention the possibility of low or uneven cylinder compression. Just as a for instance, you could have uneven...
VSA coming on repeatedlyfor several times then off for several weeks then coming on again.
Hello, thank you for writing in. The VSA warning light relates to the vehicle stability control system. It functions with the ABS system to keep the vehicle on the road in difficult driving conditions. There are multiple sensors and systems...
Related articles
Symptoms of a Bad or Failing AC Condenser Fan
Common signs include lukewarm air coming from the AC vent, the car overheating while idle, and a burning smell in the car.
Symptoms of a Bad or Failing Thermo Coolant Fan Switch
Common signs include engine overheating, the Check Engine Light coming on, and a broken or shorter signal wire.
How to Troubleshoot Car Overheating Causes
Car overheating can be caused by low coolant, a faulty radiator fans, a broken serpentine belt, or a stuck thermostat. Stop driving an overheated car.
Browse other content
Cities
Services