Q: My car is overheating and constantly filling with water

asked by on

Overheating must fill with water constantly Leaks water from passenger side of engine. Changed radiator, hoses, thermostat/still leaks and must be filled.

My car has 120000 miles.
My car has an automatic transmission.

Thats a good question. I will go through a few steps you can take to see where your problem is occurring.

  • Get a UV light and dye to put in your coolant.

  • Run your car until it is at operating temperature and turn the car off. This will cause pressure in the system make your leak more present. You may even want to get a yellow set of glasses so you can see it better.

  • Is your upper radiator hose excessively tight? If so, you have a faulty thermostat. Sometimes you will receive faulty parts even when they are new.

  • Can you see fluid on the ground? Where is it? If it is in the front of your car, look at the front side and back side of your radiator. If your radiator is wet you have found your problem. If you don’t see the leak, check your oil.

  • If your oil is milky or contaminated then you have a problem with a blown head gasket. (These aren’t the only signs of a blown head gasket, though).

  • Is your air working properly? If your car isn’t heating or cooling properly you may have a clogged heater core.

Note: there is one more issue we need to check. When you look at your coolant, does it look like its mixed with different colors? Green, yellow, orange, pink, or purple? If so, this is your problem. You will have to flush your system vigorously, maybe around 5-10 times to fix this. I have seen this many times as a technician. You should never mix colors of antifreeze because it will start crystalizing in the engine and radiator. If you need assistance with any of this, a certified technician from YourMechanic can come to your home or office to inspect the coolant leak.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My car is overheating and constantly filling with water

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 makes a creaking noise when cold but once warm it is completely quiet

Trying to pin down noises in writing can be pretty tricky. what you call a whine I might call a roar, What you call a rattle I may call a knock, you get the idea. The reason I say this...

Q: Large EVAC leak.

Hello. If the gas cap is verified to be good, the most common culprits are the purge valve and charcoal canister. If you would need help having this checked, a certified technician from YourMechanic can come to your car's location...

Q: Q: Coolant leak on car

Hi. The water pump and radiator are common leaks on your van. Your cooling system will need to be inspected to find what part is leaking. It’s ok to add water to the system temporarily until the leak is repaired,...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.