Skip the auto shop - Our mechanics make house calls

Q: Thermostat has gone bad

asked by on

My message center is saying Engine Hot, AC Off, but the engine isn't hot, and the coolant is full. Someone told me that the thermostat needs replacing.

A: It is possible that your thermostat could b...

It is possible that your thermostat could be causing this issue. It is also possible that a bad coolant temperature sensor is sending false information to the computer. I would ask for help from one of the mechanics at YourMechanic to come to you and diagnose exactly what is causing your thermostat 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

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: Key must be turned 20 times for car to start

Hi there. You would need to check the fuel pump relay and fuel pressure from both fuel pumps (yes, there are 2). The pumps fail in an erratic fashion as you describe which may be why you are experiencing intermittent...

Q: Started reading high engine temperature

This can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. The coolant fan switch helps to maintain the proper coolant temperature by turning the fans on and...

Q: Cooling Fans

Most Vehicles now have 2 separate cooling fans. One cooling fan is intended to come on when the engine reaches a certain temperature. The other cooling fan is intended to come on when the air conditioning is turned on. When...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.