Q: Car not overheating but I have coolant boiling in the reservoir tank. I have to add about a quart of coolant to the radiator ever

asked by on

Car not overheating but I have coolant boiling in the reservoir tank. I have to add about a quart of coolant to the radiator every week. I've replaced the waterpump, hoses, radiator cap. Did a coolant flush and refilled with Toyota coolant. There is no visible leaks. I'm not seeing any white or blue smoke come out of the tail pipe. No coolant in the oil and none on the oil dipstick. What can be the problem?

My car has 240600 miles.
My car has an automatic transmission.

If you are getting low on coolant and have bubbles going into the overflow bottle then you most likely have a blown head gasket. It does not always put out smoke from tailpipe. You will need to have system pressure tested and checked for compression to verify the leaking head gaskets.

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. Car not overheating but I have coolant boiling in the reservoir tank. I have to add about a quart of coolant to the radiator ever

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: Would like to put a 2JZ Twin Turbo motor in my 2013 Scion tc

Hi there. You'll be better served to contact a local speed shop that specializes in completing Scion performance upgrades to see whether or not this is possible and if they're able to offer suggestions and advice on how to complete...

Q: I have a 2010 scion tc with about 90k on it and since I've purchased the car its had overheating issues. I took it back to carmax

Hi Schuyler. I'm sorry to hear you are having a bad experience with overheating on the Scion. The truth is that random overheating problems like you've described are very difficult to pinpoint and isolate. Although many mechanics often assume that...

Q: Q: Small oil leak

The best recommendation is to get an oil change done and replace oil filter and drain plug seal. Then you can add oil dye to engine oil if leak continues. The dye can then be viewed with a black light...

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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...