Skip the auto shop - Our mechanics make house calls

Q: Bad smell in cabin..when driving the car.

asked by on

ii have owned this 2004 elantra for over 3 yrs..just resently it started to produce this realy bad smell in the cabin when driving with the ac on..the smell is something like rusty metal..the engine runs realy smooth..there is no smoke..no fluids leaking..although ii have noticed that when at a red light waiting with the car on gear an breaks on the engine does shake a little..once ii take off it goes away..this smell came to a little after ii had the water pump replaced..ive had the car get a computer check and it came back clean..the computer didnt catch any falty censors..

My car has 147000 miles.
My car has an automatic transmission.

A: Although there are no leaks that are outwar...

Although there are no leaks that are outwardly visible, there still may be some internal leak. From what you described, it sounds like you are getting a leak in the heater core in the evaporator case. It does not need to be a very large leak to get coolant smell coming through the vents. You need to have the A/C drain checked to see if there is evidence of coolant coming out of it. Replace the heater core if leaks are found. If you need help having this checked, an expert from YourMechanic can come to your location to inspect the smell and resolve the issue.

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!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Sounds when turning.

This may be a sign of failing or worn out wheel bearings. A wheel bearing will usually fail due to pitting or small damage on the surface of the rollers or the bearing race. Both the surface of the rollers...

Q: Brake dust

Asbestos was, and in some cases is still, used in the brake lining and clutch materials on many modern vehicles. It offers good strength, temperature, and chemical resistance and is cheap compared to other materials that are used for the...

Q: Hard to steer and power steering just or serviced

A loss of power steering may make it harder to steer but you should still be able to steer the car to get safely off the road. Your vehicle is equipped with electric power steering which can often be reset...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...