Skip the auto shop - Our mechanics make house calls

Q: Car problems

asked by on

So my question is if a had my engine rebuilt should i have catalytic converter failure.

My car has 191000 miles.
My car has an automatic transmission.

It will depend on why you had the engine rebuilt? If you had the engine rebuilt due to overheating and coolant came out of your exhaust then you may have damaged the catalyst during this period by sending hot coolant into the converter. This hot coolant contaminate the O2 sensors and the catalyst inside the converter can get melted and cracked apart clogging the exhaust and also would not perform correctly to clean the exhaust. You may have to replace the O2 sensors and replace the converter.

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: My traction control is off and half of the engine doesn't work, I hooked up a computer to it and the P0800 code is on

Hello, thanks for writing in. P0800 is the trouble code for an issue with the vehicle's Transfer Case Control system. When the transfer case control module, a computer that is separate from the engine computer, detects an issue with the...

Q: My car is overheating it does not have any oil and also it won't start or crank at all what could be the problem?

Hello, thank you for writing in. The engine may be in a protective shut down mode that wont let it start, or it may be seized. It is hard to tell based on the given information. You will want to...

Q: Check Engine light

You likely have a blown fuse which supplies voltage to the diagnostic connector. This will prevent the scan tool to connect to the engine computer. Most of the time GM likes to use the cigarette lighter fuse to supply the...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...