Q: I smell antifreeze.

asked by on

I wonder if my heater core needs replacing. I keep smelling antifreeze.

If you smell antifreeze inside of your truck then it may indeed be the heater core. Most of the time the passenger side floor will also get wet from antifreeze if there is a leak in the core. A leak under the hood can also cause the smell to enter the cab so you should start with a cooling system pressure test to see if you can locate the leak. A pressure tester is a speciality tool that allows a mechanic to pump up the system to help identify any leaks. For something like this you should enlist the help of a certified mechanic, like one from YourMechanic, that can easily perform this task.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. I smell antifreeze.

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: Filled up this morning, after driving about 20 miles in the heat, strong gas smell inside and outside of the van. No visible leaks

Be careful of using some fuel additives. From my experience I've found some additives that will cause the fuel to boil in the heat. Also, depending on where you got your fuel, you may have got a "winter blend" of...

Q: Truck stalls when stopping ocassionally. 2001 Mazda B4000

Hello. There could be a problem with the throttle position sensor or the idle air control valve. Both of these sensors help control proper air-fuel mixture and engine idle. Sometimes carbon builds up and clogs the idle air control valve...

Q: I have a 2004 Pontiac bonneville, and air blows cold on the passengers side of the car, but not on the drivers side. Any ideas?

Hi there. There is a blend door that keeps the air blowing on the cold and hot sections separate. The blend door maybe stuck between the evaporator and the heater core causing the temperature difference. Also, the air duct on...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...