Why does my car AC smell sour when I turn it on?

Vinegar smells in your air conditioner doesn’t mean that someone tampered with your car. … Instead, you likely have some sort of buildup of natural material in your air conditioner or vents. As plant matter decays, it can ferment and turn into alcohol, then “sour,” forming either vinegar or a vinegar-like smell.

How do I get the sour smell out of my car air conditioner?

Spray an antiseptic into the exterior air vents (where your car pulls air from outside into the car from). Be sure your AC is set to the setting that pulls air from outside in, so that the spray is pulled into the ventilation system and can directly work at killing of mold and bacteria.

How do you get the sour smell out of an air con?

How to Remove Odor from an Air Conditioner

  1. Turn the power to the unit off. Any type of maintenance starts with safety and when working with a residential air conditioning system, it’s best to turn it off at the source. …
  2. Change the air filter(s). …
  3. Clean the evaporator coils. …
  4. Clean the condensate line.
IMPORTANT:  How much horsepower can a c4 transmission handle?

Why does my car air conditioner smell like vinegar when I turn it on?

The growth of mold in your air vents is undoubtedly one of the causes of the distinct vinegar smell in your car air conditioner when you switch it on. The development of bacteria will create smells of mildew in your car and is the most frequent source of a vinegary scent.

Why does it smell bad when I turn my AC on?

One of the reasons your air conditioning system’s mildew smell might be occurring is because the compressor might not be draining properly, so the moisture lingers and causes the smell. In addition to the compressor draining poorly, your A/C might need its filters cleaned or replaced.

How do I get rid of the smell in my air conditioner?

Steps to remove AC odor:

  1. Turn off your air conditioning unit.
  2. Change the air filters.
  3. Clean the evaporator coils with a cleaning agent or bleach solution.
  4. Clean the condensate line with the cleaning solution.
  5. Gently wipe the air conditioner clean and leave to dry.
  6. Reassemble the part once the AC is fully dry.

Why does my AC smell like sour milk?

Condensation is a byproduct of the cooling method inside the air conditioner and, drained improperly, can create the conditions necessary for foul-smelling bacteria and mold to grow inside your system.

How do I fix my car AC smells like vinegar?

In most cases, you can resolve the issue by investing in a cleaning product that is created for air conditioners. The enzymes in the product will eliminate the odor almost immediately. This accelerates the chemical reactions and prevents the smell from returning.

IMPORTANT:  Your question: Why can't we use cathodic protection to prevent cars and bridges from rusting?

Why does my car AC smell like rotten eggs?

Rotten Egg Smell Coming from Car Vents

A rotten egg smell in your car often indicates a malfunctioning part in the fuel system. If the catalytic converter, fuel filters, or fuel pressure sensors are worn out or damaged, a sulfur gas can leak out and make its way into your car’s cabin.

Why does my AC smell like rotten eggs?

An air conditioner that smells like rotten eggs or sulphur almost always means one thing: there’s a gas leak in your house, which is getting into your ductwork. Natural gas is a hazardous substance. It can catch fire, explode, and/or reduce oxygen levels in the bloodstream with severe, often fatal, consequences.

Why does my car AC smell funny?

These smells are usually due to dirt, dust and debris buildup in the under-hood air intake vent, trapping water and moisture on the AC evaporator and in the evaporator case. All kinds of nasty gunk (germs, mold, mildew) can fester and grow in that wet, trapped debris.

Why does my AC smell funny?

The most common smell is dust. That’s completely normal. After sitting for months, dust will accumulate in your system and the AC just needs to burn everything off. If you’re still smelling something funny after a few days, it may be time to give your HVAC technician a call.

Why does my car air conditioner smell like mildew when I turn it on?

If your car A/C smells like mildew or mold, it could very well be actual mildew or mold! As your vehicle ages, bacteria can grow in the system where moisture typically collects — particularly on the A/C’s evaporator. When this happens, a pungent, mildew-like smell can get blasted into your cabin through your A/C vents.

IMPORTANT:  How long does it take to replace a motor in a truck?