When you turn on the air conditioner in your car, do you often have a distinct car air conditioner smell that is weird or repugnant? If this is the case, then there is definitely wrong with your car air conditioner.
There are some ways to detect and find certain smells that are coming from your air conditioner. Most of the time, these smells are a result of some damage in your car air conditioner. There are also several reasons why your car air conditioner emits a certain smell.
Mold and Bacteria
Probably one of the reasons why there is a distinct smell in your air conditioner when you turn it on is the growth of mold in your air vents. Smells of mildew in your car may be caused by the growth of bacteria.
As the car becomes older, bacteria, mold, fungi, and micro-organisms can start to grow. The growth of these bacteria is often behind the dash panel on the evaporator. This causes an unpleasant odor coming out the air conditioner unit. Also, if the air conditioner is not used as often then this can also cause the growth of bacteria.
Turning on your air conditioner to maximum often may also cause bacteria growth due to the excess water that is dripping in your unit.
To fix this problem, locate the drain tube in your A/C unit. Make sure that is working properly. Use an anti-bacterial treatment that will destroy bacteria that is growing behind your dash panel. Inject the treatment solution into the air conditioner case. It is advisable to turn off the car air conditioner for awhile and let the fan run instead for a few minutes. This will help evaporate the water on the coils of your unit.
Gas Leak
If you smell gas every time you turn on your car air conditioner, then your car may have a gas leak. When you turn on your A/C unit, the gas smell is being sucked into the fresh air that the air conditioner is taking.
To solve this problem, you need to repair the leak. There are several areas where you can check for a gas leak. Inspect the fuel pressure regulator of your engine to see if the leak is in this area. You can also check the fuel injector "O" rings in the engine compartment for any leaks. It is also advisable to check your exhaust pipes and muffler for any holes that can cause gas leaks.
Dirty Air Filters
Your air filters may also be causing a weird car air conditioner smell. If not cleaned properly, the air filter can collect dirt, stagnant water, dust mites, and other harmful pollutants. This can result in a bad smell every time you turn on your air conditioner. You can easily fix this problem by just replacing the old filter with a new one and regularly cleaning the air filter of your air conditioner unit.
Antifreeze
If the cooling system in your car smells sweet, then you should have your unit checked immediately. The sweet smell is often the cause of toxic liquid ethylene glycol or antifreeze. This smell is the result of a leak in the cooling system. The leak can come from the heater core, pipe or hose, coolant housing unit, or the radiator.
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