Q: Why is my car overheating with coolant in the radiator, but not with water? It overheated today when i finally added coolant, why?

asked by on

My radiator had a crack on the topside of the plastic. I patched it up with JB Weld and added water in the radiator. I was doing that for the past week. A few days ago the pressure made a hole in the JB, so i patched it up again. I was adding water this whole time and not once did it overheat. Today i added a mix of water and coolant and it overheated, why is that?
My car has an automatic transmission.

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. Why is my car overheating with coolant in the radiator, but not with water? It overheated today when i finally added coolant, why?

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: Hood can’t stay shut

As far as I know, all vehicles meant to be used in the United States should have a double latch system. These systems have a primary latch which holds the hood down all the way and is released by the...

Q: Service "A" with low tire pressure reading needing scheduled maintenance.

Service A is supposed to be performed after the first year/10,000 miles of ownership, then every 2 years/20,000 miles going forward. This service includes: Oil and filter change Resetting of the maintenance reminder Tire condition/pressure check (this will...

Q: Q: A fuse blows when power seats are used

The power seat motors on your 2004 Kia Amanti have only one fuse, and it is a 30 amp fuse. If you replace this fuse, and it blows when you try and operate the seat then there is a problem...

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...
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...
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...