Q: 2004ford focus engine gets hot and fan is not on, but it works if you put jumper cables on it

asked by on

Engine gets hot but fan want come on,i was told that I need an engine coolant temperature sensor and the fan will work
My car has an automatic transmission.

Hi there. The coolant temperature switch, also called the coolant temperature sensor, is a switch that reads the engine coolant temperature and sends a signal to the engine control module, or ECM, to control other functions of engine operation such as the air-fuel ratio. It is also called a switch because on some cars, it is used to turn on the engine cooling fan at a specific temperature. This aids in the engine warm-up process as well as keeping the engine at a safe operating temperature. In order to provide you with an accurate price, please fill out a request for coolant temperature switch replacement.

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

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!
  1. Home
  2. Questions
  3. 2004ford focus engine gets hot and fan is not on, but it works if you put jumper cables on it

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: Upon hitting a curb, a piece of aluminum with foam on it ( about the size of my hand ) ripped off of my 14 focus. what is it?

If you hit a curb hard enough to cause a splash or heat shield (or bumper fascia component, if it is that) to dislodge, I would be more worried about damage to the tire, rim, and possibly the suspension, particularly...

Q: I was told that my serpentine belt was going out over a week and half ago in my 2010 Ford Fusion SE

It sounds like you may have a couple of different issues. The shaking and not accelerating issue is likely related to the transmission. What you are describing is often a sign of low transmission fluid or a faulty transmission control...

Q: Hear humming sound while turning

Hi. Your symptoms have many potential causes. However, Honda and Acura SUVs have been known to produce a humming sound during low speed turning due to worn differential fluid. Acura refers to the differential system in your vehicle as Variable...

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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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.