Skip the auto shop - Our mechanics make house calls

Q: Loud noise

asked by on

While driving, I hear a loud noise. And now the vehicle has drivability issues.

A: Your concern sounds like an exhaust leak. A...

Your concern sounds like an exhaust leak. A leak in the exhaust system can easily cause drivability issues because the oxygen sensors constantly monitor the exhaust gases and adjust fuel trims accordingly. If a leak is present it will throw off the oxygen sensors readings and the vehicle will say that it is running lean due to excessive fresh air in the exhaust and will add fuel to richen the air fuel mixture when it is not actually needed, causing check engine light in some cases and drivability issues. An inspection of your exhaust should be carried out by a qualified technician in order to pinpoint the root of your concern.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: A/C won't turn off or lower from high

The most common cause of blower motor issues is the blower motor resistor, though usually it will only work on high speed and won't work on any other speeds. Because yours is blowing in high speed in all speed settings,...

Q: Engine makes noise

This is not a common problem. The engine may have been starved of oil and the only way to tell is to do an oil sample to see what failed inside the engine unless a rod is sticking through the...

Q: Engine code P0430 and losing oil

Diagnostic Trouble Code P0430 means that the ECU is detecting below threshold performance from the catalytic converter. The ECU monitors the catalytic converter closely and when a low performance threshold is detected the Check Engine Light will be displayed on...

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.