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

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: Lack if power at 20mph

Hello there. The P0300 series of OBD-II trouble codes indicate misfire problems. The 304 and 306 codes indicate a misfire on cylinder(s) 4 and (6). You might want read this article on the P-0300 OBD-II trouble code to review possible...

Q: Tranny

The first thing that needs to be done is to scan the vehicle for all codes. Since the overdrive light is flashing, a simple code reader from your local parts store will not likely be of any help. Code readers...

Q: Rear window leak

More than likely the rear window trim is allowing water to enter. The trim and/or windshield may need to be replaced. I suggest having a professional, such as one from YourMechanic, inspect your windows firsthand for a definitive answer of...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...