Q: Brown stuff coming from the radiator.

asked by on

Yes, there is brown stuff coming from my radiator again I just got it flush 2 months ago and I'm trying to see do I have to get it flush again because my car want let me drive it

My car has 596000 miles.
My car's transmission is unknown to me.

Hi there:

If you have almost 600,000 miles on your Impala, it’s probably time to replace your radiator, as the brown stuff is likely rust coming from within your radiator due to excessive use.

Was this answer helpful?

Hi there. The brown stuff coming from the radiator is the corrosion and deposits that is built up in the cooling system. If you already performed a cooling system flush, I recommend removing the thermostat and housing along with the radiator hoses and flushing out the engine with running water using a water hose. You can put dawn dish soap in the engine to help break down the corrosion, but make sure that all of the soap is out of the engine before starting it. Flush the radiator out with soap and make sure that the water can flow smooth with no particles in it. Then put the system back together and put in a cleaning detergent from the parts store that is Preston and drive the vehicle with new coolant for 500 miles. Then flush the system again and put in new coolant and the cooling system should be clean with no more brown debris or corrosion. If the engine continues to have contamination’s, then there could be an issue with engine oil getting into the cooling system or transmission fluid getting into the cooling system. If you need further assistance with flushing the cooling system, then seek out a professional, such as one from Your Mechanic, to help you.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Brown stuff coming from the radiator.

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: My key won't come out of ignition for my 2007 Chevrolet impala.

Try turning the steering wheel hard from the left to the right and wiggle the key around a little bit. If the key is still stuck, then you will need to remove the plastic molding around the steering column to...

Q: My car AC make noise when on but quiet when off. I just replaced the entire system less than 2 years ago?

It sounds like you may have an internal component of the AC compressor failing. It is possible to be a bearing or another non serviceable item. I suggest having a certified technician, like one from YourMechanic, diagnose the noise firsthand...

Q: where is the emergency fuel shut off switch located on a2004 buick rendezvous with a 3.4 liter engine

Most of the time if the vehicle has one of these switched it will be located in the rear near the fuel pump itself. It is also possible that this switch could be located near the fuse box up in...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.