Q: Q: Overheating

asked by on

2008 Rx350 - coolant is draining after I fill it up. No huge puddle to indicate leakage. Car is running very hot within moments of starting car up almost pushing a notch away from the red zone. Squealing noise is being emitted but very faintly. Also I smell a sweet burnt syrup smell that is faint. 122,000 miles

My car has 9999999 miles.
My car has an automatic transmission.

Hi there. This is a concern I’ve experienced many times while employed at a Lexus dealer. The low coolant level is contributing to the high operating temperature and is a direct result of a coolant leak. The smell you are experiencing is the coolant leaking to the outside of the engine and being burned off by the high temperature.

The squealing noise may be coolant leaking from the water pump onto the serpentine belt. A cooling system pressure test would be the best bet to locate the leak/leaks. If you are not seeing a puddle, the leak may be at what is called the engine block valley plate; located under the intake manifold and very difficult to see. However, I think there may also be a water pump leak as well causing the noise. The valley plate will leak into the middle of the engine block where the coolant will sit until it either burns off or overflows to the ground. YourMechanic has several available technicians to assist you with a coolant leak inspections, and water pump replacement (if needed), and can provide an estimate and direction for proper repair.

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
  1. Home
  2. Questions
  3. Q: Overheating

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 starting, but starved for gas

Hi there. A lack of fuel will definitely cause your vehicle to sputter. There may be an obstruction in your fuel lines or fuel filter causing this. I recommend having a mechanic, such as one from YourMechanic, check your fuel...

Q: Advice on which type of gas to use

If you look at your fuel gage, it will say "premium fuel only". The vehicle was designed to only run on this fuel. If you try and run the lower grade fuels, you will run the risk of damaging the...

Q: 1995 Lexus ES 300 won't stay running

Based on the symptoms listed, I suspect an electronic or computer issue. Mainly because of the part about the brake pedal. I would recommend having an inspection performed on your vehicle to determine why your car is starting and then...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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.