Q: Overheating and leaking from around the heater core

asked by on

My Pathfinder is overheating. Its is leaking from the back by the heater core, but I cannot tell from where exactly.

If your engine is leaking coolant, this is the reason for the overheating. The cooing system requires a specific level of fluid in order to function properly. If the fluid is leaking by the firewall near the heater core, the heater core may have a crack in one of the tubes that the hoses connect to or the hoses themselves could be leaking. I would recommend having a professional perform a cooling system pressure test on your vehicle to determine where the leak is coming from. Once this has been found, repair the problem as soon as possible to prevent engine damage due to overheating.

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. Overheating and leaking from around the heater core

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: Q: Power steering fluid leak.

Hello, a power steering leak is something that needs to be addressed sooner rather than later, so the pump doesn't run dry and cause internal damage. The most common leak in the power steering is the power steering reservoir where...

Q: ABS/VDC/Slip light on.

Hello. If these lights were not on prior to replacing these parts then you need to start by checking the brake fluid. Low brake fluid or a bad brake fluid level sensor will cause this problem. If the fluid and...

Q: Q: Idles and stalls again.

Hi There, It sounds like you may have a dirty or failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine at low...

Related articles

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...
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 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.