Skip the auto shop - Our mechanics make house calls

Q: Overheating

asked by on

Overheating check engine light came on and not shifting properly and heater is not warm

My car has 145000 miles.
My car has an automatic transmission.

Hello. Heater failure and transmission issues are signaling that the cooling system is having a complete meltdown. Both of these systems depend on the cooling system to work correctly. Typically when the entire system is struggling there is a severe leak leading to a lack of fluid, a failed thermostat, a clog, or failed water pump causing a lack of circulation. The first step is to check the level of coolant in the radiator and overflow reservoir. If the level is low, then there is a leak or the engine is consuming the coolant. If the coolant is full, you will want to turn your attention to testing the water pump, thermostat, and possibly flushing out a clog. The only way to tell why the vehicle is overheating is to test each of these components individually.

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

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!

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: Starter not turning

Hi there. If you hear a click, then the first thing I typically do is find where that click is coming from. Most of the time, the clock is the starter trying to engage but it is unable to crank...

Q: My 2002 Saturn Vue's rpms started revving into 4-5k when up shifting. Later that day the clutch went out. Now the starter is out.

Hello, thank you for writing in. The decision to invest in an older car is difficult, even more so when you do not have the car in front of you. A failed clutch can interfere with the flywheel causing the...

Q: Car making ticking or knocking noise

Hi. Most of the time a ticking or knocking noise coming from this engine is not a good thing. You should check the oil. If you need assistance on how to check your oil, take a look at this article....

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...
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.