Skip the auto shop - Our mechanics make house calls

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?

Need advice from certified mechanic? Get help now!

Over 1000 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
  • Home
  • Questions
  • 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: Car sometimes stalls at red light

Intermittent issues are among the most complex to diagnose because of the infrequency and all the variables that come into play. I have seen everything from low fuel pressure to a bad transmission torque converter cause a stalling situation when...

Q: How do I remove the seat track on an '02 Ford Explorer?

Hello there. The seat track failure is a common failure. If the motor went bad, then it may be easier to just replace the motor itself. Seat tracks generally just bolt to the seat frame, if it does not bolt...

Q: I have water and fuel in my oil

This is due to a possible blown head gasket near the number 6 cylinder on the engine. You have aluminum heads and may have a crack in the head. I would recommend having the system checked by a certified technician...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.