Q: Overheating coolant reservoir has a pinhole in it. Is this the cause of overheating?

asked by on

Pinhole in coolant reservoir will this cause overheating

My car has 224000 miles.
My car has an automatic transmission.

Hey there. If the coolant reservoir is leaking, then it could leak out enough coolant to cause the engine to overheat. The reservoir is known to get stress heat cracks and leak coolant. You might see a small pinpoint leak, but as the engine runs hotter it will push out more and more coolant.

I would suggest having the cooling system checked for overheating then pressure tested for the leaks. If the coolant reservoir is leaking, then have it replaced. Run the engine to verify the cooling system fans come on and the system does not overheat. A certified professional from YourMechanic can come to your car’s location to diagnose the leaking coolant if you need this taken care of.

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 coolant reservoir has a pinhole in it. Is this the cause of overheating?

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: Issues going into reverse 2002 Ford Escape

Hi there - most likely your problem is internal to the transmission itself. Check the fluid level of the transmission first - low fluid level can cause the problem you describe. If fluid level is adequate, the problem is likely...

Q: Timing cover leak

Hello...I will help you with your question. The cost to to replace the gasket in the timing cover varies wildly depending on whether you have the 1.8 L engine designated 1ZZFE or the 1.8 L designated 2ZRFE. The labor time...

Q: If my Camry won't crank due to it saying it's in drive what is going on 2001 Toyota Camry

Hello. It sounds like you have a failure in the shift cable or the transmission position sensor. Most of the time this occurs if the shift cable has broke or if it is binding. I usually disconnect it and check...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.