Loud Whine and overheats?

2000 CHEVROLET IMPALA

160,000 MILES

RAYBEATZ

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Brand New Radiator, Topped off Reserve Tank and Radiator and I still get a low coolant light. Also, the car overheats slightly beyond comfort. Also I heard a loud high pitch wine. It does not matter if the car is idle or driving. It is loud and very annoying. Could it be the water pump? This sound and overheating issue was prior to replacing the radiator.

Aug 8, 2012 at 4:17 PM

SQM

CAR REPAIR CONTRIBUTOR
6,383 POSTS

Hello,

The low coolant light when you have proper amount of fuel gets triggered by a faulty coolant level sensor.
The sensor is located at the bottom of the coolant reservoir. Check to see if it is connected properly and does not have any corrosion on the connector.

The high pitch noise could be the water pump. You could have a broken impeller inside the water pump.
Remember to only work on the cooling system when the engine is cold.

Here are some helpful articles:

https://www.2carpros.com/articles/water-pump
https://www.2carpros.com/articles/symptoms-of-a-bad-water-pump
https://www.2carpros.com/articles/water-pump-replacement

I have attached the replacement procedure.

Please let me know of any questions.

Thank you.

Images (Click to enlarge)

Aug 9, 2021 at 8:23 PM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.