Q: Water getting into car

asked by on February 13, 2016

Water is getting into the car. I think it could be the air conditioning.

Heating AC Inspection $79.99 - $89.99 Get a Quote

Hello. During it’s operation, the air conditioning system will come across a large amount of condensation. This condensation gathers around the evaporator and runs off through a drain. You may see water dripping from the car on a hot summer day while the air conditioning is running. The drain leads to the engine bay in most cases and dirt may accumulate in the drain tube. If the condensation backs up, water can leak into the car.

Another note, the heater core which is located inside the cabin as well is a components used to heat the passenger compartment. Inside this device runs hot engine coolant and when air is blowing across, the air picks up the heat and heats the cabin. A leak here is a cooling system leak and can also spill engine coolant and water inside the vehicle. If you need further assistance, I recommend you have a certified technician, like one from YourMechanic, inspect heating/AC system and suggest an appropriate repair.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

What others are asking

How do I use the Pass Temp feature?

The Pass Temp feature allows you to change the temperature between the driver and passenger side. This makes them the ride more enjoyable for both the driver and passenger. To use the Pass Temp feature: Press the Pass Temp...

Check engine light on, temperature goes to hot, noisy engine, car shuddring and turns off.

Fault codes need to be read out from the engine computer. There is a technical service bulletin (TSB) out by Lexus that points to a faulty thermostat causing a Check Engine Light, and that the thermostat should be replaced based...

grinding noise (not squealing) when brake

If the issue did not exist prior to the work being done, then the cause of the unusual noise is due to the pads and/or the interaction between the pads and the particular finish that was left on the rotor....

Smell coming from A/C vents

It sounds like you have a leaking heater core inside the evaporator housing and would need to have it replaced. If you have the heater bypassed then you will not have heat inside the car and the temperature control will...

My car makes a whirring noise and the check engine light is on with codes P0741 and P0700

The noise you are hearing is the transmission is having problems internally with the torque convertor clutch and valve body. The code P0741 has a long list of possible problems all pertaining with the torque convertor and valve body of...

Can you raise the top speed control?

Hi there. There are two ways to speed up the vehicle. The first is to replace the output shaft speed sensor in the transmission to sense a slower speed, thus confusing the computer to make the car drive faster. The...

Car won't start - 2004 Volkswagen Golf

Hello. I will help you on this. It's unclear whether you bought a new battery and a new alternator because those parts were accurately diagnosed as defective. A battery must be load tested, only after it is fully charged, in...

Service stable track light is on, service traction control lights on, rough idle. New throttle body.

Having symptoms such as this after having something like a throttle body replacement definitely suggests something went wrong with the installation, but not necessarily so. Coincidences happen every day in automotive. If I were working on this vehicle, I would...

Clicking while driving straight and turning. Sounds like a card in the spokes of a bike tire. Stops when I stop.

Hi Megan. Thanks for contacting us today. Typically this type of sound is caused by one of three things. Either the wheel bearings are starting to wear, you have a brake pad that is dragging or your brake rotor is...

Related articles

Why Won't My AC Blow Cold Air?
When you turn on the air conditioner in your car, you expect to receive a flow of fresh, cold air....
How to Diagnose an Inoperative Air Conditioning System Faster and Easier
Automotive technicians diagnose an inoperative air conditioning system with a digital scanner, physical inspection, and under the hood examination.
What Causes the AC System to Leak?
Your car’s air conditioner is responsible for keeping the interior cool and comfortable on hot days. However, in order to do that,...