Skip the auto shop - Our mechanics make house calls

Q: Squeak/screech noise, burning smell

asked by on

So I just bought this liberty last week and its having two problems that even with my experience and basic knowledge I cannot identify to save my life. When in idle (park/neutral) it makes a revolving noise that sounds similar to the noise bad brakes would make but much less so. When I engage it into drive the noise either stops or very very faintly keeps going, when the engine rpm's increase so does the noise to a constant drone of screeches. Now the noise does not sound blood curdling to the point I'd think my car will explode but it is something I am concerned about. The weird thing is that it is not coming from the engine area and can only be identified from coming somewhere around the front third of the vehicle (almost center). All fluids and belts are good and as stated I know its in that area. All fluids are good and have been checked except the differentials. Also I sometimes get a strange burning smell which can not be identified and is not from the engine area either.

My car has 150000 miles.
My car has an automatic transmission.

A: This may very well be related to the cataly...

This may very well be related to the catalytic converter in your car. As you know, the catalytic converter is responsible for converting toxic combustion gases into less harmful gases to be dispelled into the atmosphere via your car’s exhaust system. When this is clogged or your car is running very rich (too much fuel), this can cause the catalytic converter to overheat which will eventually result in poor fuel economy and poor running conditions. You may also notice a burning smell as you describe. If this is the case, you should also likely have a Check Engine Light on which would indicate that the vehicle needs to be serviced. If you need help having this scoped out, a certified professional from YourMechanic can come to your car’s location to pinpoint the cause of the noise and the smell so that this gets repaired properly.

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: Car sputtering.

You need to have the car checked for a fuel leak at the fuel filter and the fuel system. The fuel filter has been known to leak if the filter is not a factory replacement. An aftermarket filter man not...

Q: Charging system warning light.

This may be a sign of a weak battery or a failing voltage regulator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine...

Q: rear end problem

Hi there. Unfortunately, we do not have the type of information readily available to answer this type of question. We can assist you with any question that involves returning a vehicle to factory specifications; we cannot provide modification information. Your...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.