Skip the auto shop - Our mechanics make house calls

Q: Catalytic converter bad.

asked by on

My car did not pass the smog check. I was told it was the catalytic converter that has failed. I have, under advisement, changed the O2 sensors. But that did not fix the problem. The next step, I am told, is to change the catalytic converter.

A: Catalytic converters do have a federal requ...

Catalytic converters do have a federal required warranty that most people are unaware of, talk to your dealer to find out if you are still covered. Early catalytic converter failure can be cause by other factors including coolant contamination can melt the internals, vacuum leaks cause similar failures and also some off road fuel additives do the same thing. Sticking to the manufacturers recommended fuel ratings can help increase the life and performance of the various components of your vehicle

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: Horn no longer working

Start with checking the fuses, your owners manual will have a diagram explaining where the fuse boxes are and which one is for the horn. If the fuses are good, the issue could be the horn button, wiring to the...

Q: How do I get the monitors on my car ready for SMOG test?

Hi there. Take a scanner and check the computer (ECM) for any codes that could be pending. Check to see what the codes are and correct the code by performing the repair on the area that is not working or...

Q: Mixing incandescent bulbs with LED's in a car

Generally speaking, mixing incandescent lights with led's should not be a problem. However, it has been my experience that there are a some vehicles that will use a lighting control module to control accessory lighting, and led's have much less...

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...
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...