Skip the auto shop - Our mechanics make house calls

Q: Car gets hot

asked by on

The car gets hot on the interstate but only after you reach 70mph or more and when the cat is at an idle it does not get hot but if you take the cap off the resevore the coolant just pours out now my question is. Does that mean I have a blockage?

A: This can be caused by a number of things su...

This can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant temperature by turning on and off at specific temperature thresholds. When this switch is not working properly, this can cause the fans to come on intermittently, all the time or sometimes not at all. When this happens you will notice a temperature spike and drop occasionally as the fan comes on and off. When you take the cap off, the coolant will naturally want to come out due to the intense pressure build up from the heat. If you'd like to have this fixed, I would suggest having an expert from YourMechanic come to your home to diagnose your cooling system and help you make the necessary repairs.

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・Save up to 30%

Get a quote

What others are asking

Q: Coolant control valve malfunction

The coolant control valve on your Toyota Prius controls the flow of coolant in and out of the coolant storage tank. By diverting coolant into the storage tank, it can keep the coolant heated in order to keep the engine...

Q: Car Overheating 2004 honda accord

If your vehicle has overheated it is very possible that head gasket or head damage has occurred. I would recommend having the engine thoroughly inspected as well as pressure tested to determine if any coolant leaks exist. I would also...

Q: think i put wrong oil in car went few miles lose power car dies oil in spark plugs still starts low oil blinking light before die.

Hello. If you put too thick of an oil in the car, then you may have damaged the engine bearings but this should not have caused oil to get in to the spark plugs unless the oil got into the...

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...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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...