Skip the auto shop - Our mechanics make house calls

Q: Hey I have 2004 Honda Accord. It only runs hot whenever I cut the heat on, long as the air is on, it stays right

asked by on

Overheating

My car has 173 miles.
My car has an automatic transmission.

A: Hello. If the engine is overheating, but wi...

Hello. If the engine is overheating, but will maintain the right temperature when the AC is on, then typically that is the result of a radiator cooling fan issue. When the AC is on, one of the fans will come on and keep the engine cool. If the AC is off and the main fan is not functional, then the engine will overheat. I usually start by testing the fan and then the circuit to find the problem. Most of the time on this vehicle the problem is with the fan itself. If you need to have this overheating problem inspected, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair this.

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: Over heating but water is flowing through radiator

Hi there, there are a number of things that can cause a vehicle to overheat. The water flowing through the radiator can be a little misleading. Here is a list of possible causes: Thermostat Water pump Clogged radiator. Inside...

Q: Mercedes Diesel takes 30 to 40 sec to start every time cold or hot

You could be right about the fuel pressure. The system is supposed to maintain a certain amount of pressure while it is off and if that pressure falls off it may take some time for it to build up again....

Q: Fan only works on highest speed. 2008 Volkswagen Passat

Hi there, thanks for writing in about your 2008 Volkswagen Passat. If the blower motor resistor and connector are good, then the only other thing that can cause the problem is the blower control switch or connector. Check the resistor...

Related articles

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...