Skip the auto shop - Our mechanics make house calls

Q: Overheating, mostly when car is not going forward

asked by on

1st symptom: radiator started leaking. Had to change top compartment of it. 2nd symptom: smells something hot from the motor 3rd symptom: 4 overhead spark plug bobbins burnt out I don't see over-temperature on the temperature gauge in the panel. Even when the car is running, at its normal temperature, the fans are not working for most of the time. I have seen that they start only for 10 or 15 seconds and then they stop. You can smell that it's hot, as if the cables are overheating. I suspect something wrong with temperature switch or fan relay. I had just changed the 6 bobbins and I think they will burn out soon if overheat continues. Your kind help is appreciated.

Hello, thanks for writing in. If the fans are not coming on then it may be possible that the fan switch or fan relay are bad. I would test them to see if either of them need to be replaced. Keep in mind that most fans are wired to run only while the temperature is hot, and to shut off when the temperature falls back below the specified limit. If the switches are good then it may be possible that there is an issue with the cooling system that needs to be addressed. If you would like further help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

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!
  1. Home
  2. Questions
  3. Overheating, mostly when car is not going forward

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: Car keeps overheating and losing antifreeze. Thermostat and hoses are all fine. What else could it be?

Hi. I believe your Hyundai has a blown head gasket. This failure mode may not contaminate engine oil with coolant as sometimes occurs. The lost coolant may go into the cylinder or the exhaust instead. A slightly sweet smell from...

Q: Starting slow

Hello, thank you for writing in. The first thing we need to determine is if the slow crank is due to an engine issue or if the starter is running slow. As a starter fails, it may produce a slow...

Q: Car stalls and locks steering wheel, ebrake light comes on, as do all other lights, and I have to restart to drive.

If the vehicle is stalling intermittently then the computer may have stored failure codes in memory. You will need to have the computer scanned for the stored codes and let us know the codes you get in order to help...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...