Q: The problem I'm having is overheating and then water starts to come out of the overfill hose on the reservoir.

asked by on

A Mechanic I went to told me to take the thermostat out. Which I did, and it doesn't seem any better, maybe even worse

My car has 107000 miles.
My car has an automatic transmission.

Hi there. If you have removed the thermostat and the engine still overheats, then there could be an issue with the water pump or the head gasket. With the engine running at operating temperature before it gets hot, check the upper and lower hose and see if there is any temperature change. The upper hose would be warmer than the lower hose. If he hoses are about the same temperature, then the water pump is working. If the hoses are different temperatures, then the water pump may not be working. Also, get a block tester kit from a local parts store and use it to check the steam coming out of the reservoir with the cap removed. Be very careful as coolant can burn skin when it is very hot. If the blue chemical turns from blue to yellow or green, then there is carbon in your coolant, which would mean that the head gasket is burned. I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your overheating issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. The problem I'm having is overheating and then water starts to come out of the overfill hose on the reservoir.

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 truck keeps over heating when heater is on, blows hot air. What can cause this problem?

Double check the coolant level to make sure that after you have the heater turned on your coolant did not get low. If it is full then you need to replace the water pump and the thermostat. The water pump...

Q: I hear a hissing sound when driving, and it only stops right after applying the brake pedal.

A likely cause of the hissing sound is a leak in the atmospheric valve within the power brake booster. The reason the sound ceases when you apply the brakes is because the vacuum valve within the booster closes upon pedal...

Q: Issues with coolant pouring out of the overflow

Hi there. If the engine is losing coolant, then the location of the leak needs to be found first. A leak will allow the coolant to get low enough to cause it to overheat. I start by doing a pressure...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...
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.