Skip the auto shop - Our mechanics make house calls

Q: my coolant becomes empty after two days of filling it up

asked by on

My coolant light came on and I filled it to the top. Two days later it came back on and under my car was leaking fluid. I went into jiffy lube and they said they couldn't discover a leak after refilling it back up. It is now two days since my visit there and coolant light is back on and nearly empty. My tempature is becoming 230 regular after driving only 10/15 miles. I don't know a lot about cars or who to go too. Im suspecting a leak (i know jiffy lube workers are not mechanics) What do you think the problem is? And where should I go?
My car has an automatic transmission.

You have a leak. The only question is where. YourMechanic will pressurize the cooling system when COLD which should reveal the leak without too much trouble. A common leak would be through the water pump bearing weep hole, especially if your pump is old. If the water pump is leaking you will need a new water pump (not an unusual job) and then a re-test for any additional leaks. If water pump is replaced and the thermostat is adjacent you should put in a new OEM GM thermostat.

Coolant can leak "internally" too. That would be a problem as repair of internal leaks is much more costly. So I would suggest having one of our mobile technicians come to your home to diagnose the source of the coolant leak. Hopefully it will be a simple water pump repair or a loose or damaged coolant hose. Best of luck.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Leaking from radiator drain plug petcock.

Hello. The only other solution you may have is to remove the petcock and install a bolt in its place with sealant. I do not recommend doing this though as it is not a permanent fix. If you want to...

Q: Car keeps saying the starter is disabled

It sounds like the new key needs to be encoded with the powertrain control module (PCM). The original key has a resistor in it with a specific resistance value. If the PCM sees a different resistance value, it will disable...

Q: Car has oil leak

It needs to be determined where the leak is coming from. Is it engine oil? Power steering fluid? Transmission fluid? Some leaks are easy fixes, some can be quite expensive. A qualified mechanic from YourMechanic can come out and diagnose...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...