Skip the auto shop - Our mechanics make house calls

Q: coolant evaporating very quickly

asked by on

My car overheated for the 2nd time in 3 months. The first time the reserve was empty and my radiator cap was old and the rubber piece inside came off. I replaced it. Filled up the empty reserve and radiator. So far so good. Untill 4 days ago it overheated. I immediately stopped driving. Again the reserve and radiator was empty. I refilled them. I also noticed a rotten egg smell coming from the vents while the air conditioner was on. The smell only happened twice after the second over heating. Now I have to u keep checking because after 2 days the radiator was full but the reserve was empty again. Whats wrong ?

My car has 190012 miles.
My car has an automatic transmission.

A: Hello. If the coolant continues to go low t...

Hello. If the coolant continues to go low then there is a problem with the vehicle. It can be an external leak or the engine may have an internal failure which is causing the coolant to burn off. Since you are having this smell also that tells me that it may be the engine itself. I will usually fill the coolant up and do apressure test of the system. This will tell me if there is an external leak as the coolant will be forced from that area. If none are found then I do a block test. This tells me if there is a problem within the engine. If it comes back positive then the cylinder head will need to be removed and the engine inspected. If you want to have this overheating issue checked out, consider YourMechanic,as a certified mechanic can come to your home or office to diagnose this overheating problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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

Get a quote

What others are asking

Q: My car has a rough idle and water leaking from the tailpipe - 1999 Toyota Land Cruiser

Hello and thank you for contacting YourMechanic. If the smoke is slightly white, it could be burning the fuel too cold. This is an issue with a cylinder misfiring and causing raw fuel to enter the exhaust pipe. Check all...

Q: Car will start and idle but when I give it gas it struggles and almost dies out.

Hello. This can be caused by a number of things. Though most of the time it is caused by a bad air flow sensor. When this sensor does not read correctly this will occur. I usually install a scan tool...

Q: Can you reset or bypass traction control?

If you just put on new tires only in the rear and not in the front then the tires need to be checked to see if there is a difference in the tire height. This will cause the wheel sensors...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.