Skip the auto shop - Our mechanics make house calls

Q: Car is overheating quick

asked by on

When I turn on my car the line will go all the way up under the red

My car has 150000 miles.
My car has an automatic transmission.

Hello. If the gauge goes hot instantly when first started in the morning, then you may have a faulty gauge or coolant temperature sensor. For this car in particular the sensor is usually problem. If the temperature shows cold at first and then rapidly overheats, then you more than likely have a blown head gasket. The only time it will overheat that fast is when combustion pressure gets into the cooling system. Normally I would perform a block test first to verify this. If you are going to have this looked at, consider YourMechanic, a certified mechanic can come to your home or office to diagnose and fix the source of your overheating problem.

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: When the rover is cold, the idle is steady, but when it gets cold, the idle changes. I have to keep my foot on the gas and brake

Hi, thanks for writing in. I'd be happy to help. This is a case of an idle air control valve not working properly. An idle air control valve literally bypasses air around a closed throttle plate so the engine can...

Q: Check engine light on, temperature goes to hot, noisy engine, car shuddring and turns off.

Fault codes need to be read out from the engine computer. There is a technical service bulletin (TSB) out by Lexus that points to a faulty thermostat causing a Check Engine Light, and that the thermostat should be replaced based...

Q: Rough idling misfire & a thumping sound from the front of engine

Hello. It sounds like your cam timing may still be off or there may be another issue. I would typically do a compression test first. If the compression is low on only a couple of cylinders, then you have an...

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 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.
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.