Q: i replace radiator and now my coolant resivor starts boiling and i over heat

asked by on

I replaced radiator after trying a stop leak that was for blocks and radiator and now I still over heat and now a new problem has occurred my coolant resivori is boiling on top of overheating

My car has 230000 miles.
My car has an automatic transmission.

When you put in the stop leak, you may have blocked some passages and the thermostat. I would remove the thermostat and the lower radiator hose, then run clean water from a hose through the engine and radiator to flush out all the stop leak.

After flushing the entire system out, then install a replacement thermostat and reinstall the lower radiator hose also. Once this is done and the system is refilled with new 50/50 coolant, then you should not overheat.

If it continues to overheat after this then you may have a blown head gasket.

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. i replace radiator and now my coolant resivor starts boiling and i over heat

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: Car shaking

The car shaking is likely from a motor or transmission mount, but you could be having other issues, such as an engine misfire. I recommend that you have a mechanic, such as one from YourMechanic, run a diagnostic check of...

Q: Truck turned off and was hard to restart.

Hello. If the crankshaft position sensor is going bad, then the engine will typically run like this. The crank sensor tells the engine control module what the speed of the engine is. It uses this to determine when to send...

Q: Check coolant light on and oil leak

Hi. It would appear that the vehicle may have several problems that will probably need to be addressed separately. If your coolant light has come on, but the level is okay, that may be indicative of a problem with a...

Related articles

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...
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.