Q: coolant leak overheats only when driving

asked by on

in the back on the right under the hood there is a coolant leak it's not the head gasket thermostat water pump or heater core, it is overheating right away while driving but it doesn't overheat when idle. I changed the thermostat and water pump

My car has 180000 miles.
My car has an automatic transmission.

The external coolant leak you are referring to can be pinpointed by simple pressure testing of the cooling system when the engine is cold. To find the leak that exists in your case, and get the required repair estimated, please request an engine cooling system leak diagnostic and the responding certified mechanic will get this resolved for you. In regard to the overheating, if the coolant level was low that can cause overheating. There are a few other common causes of overheating, namely a faulty thermostat, a plugged radiator, collapsed hoses, and a faulty water pump or drive belt. Certain engine faults, such as a leaking head gasket or poor engine running condition can also cause overheating. If you desire that this problem be diagnosed by a certified Mechanic, dispatched by YourMechanic right to your location, please request an engine overheating diagnostic. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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. coolant leak overheats only when driving

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: Car is smoking, knocking and idling by itself.

Hello, thank you for writing in. The vehicle is overheating, and the other symptoms are related to it. If it has overheated passed a certain point, there may have been major damage done to the engine. At this point, the...

Q: I am looking into doing a engine swap on a 2006 gmc envoy xl 4.2 Liter engine 6 cylinder

Hi there. Unfortunately, this is not a service we offer. Your best bet is to search for an engine replacement shop locally. They will be better equipped to provide you with the correct recommendation.

Q: Over heated car cranks but does not want to start

Hi There, It sounds like your car may have a blown head gasket as a result of overheating. A blown head gasket may cause a number of different symptoms. A head gasket that fails between cylinders will generally cause a...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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.
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.