Q: Every three months, catalytic converter and muffler must be replaced

asked by on

The catalytic converter and the muffler have to be replaced every three months in my SUV. The cause of this is the hydrocarbons that are continually deteriorating them, but I do not know what is causing this problem. Using Bosch products, I replaced the wires and the plugs. Also replaced the EGR with an AC Delco. But not a solution; problem still exists. The catalytic converter becomes clogged up and then will not accelerate very well at all. I’m considering that the only way to go is straight pipe before junking this SUV. Do you have any suggestions of how I can fix this and save this vehicle?

I would start with checking the O2 sensor. This is what relays exhaust gas changes to the vehicle’s computer. When this sensor is not working correctly, incorrect or misdiagnosed air/fuel mixtures are relayed to the vehicle’s computer causing incorrect changes to be made. When exhaust vapors become trapped in front of the catalytic converter, this can also cause a misreading by the O2 sensor resulting in a misreading to the computer. I would recommend having a qualified mechanic, such as one from YourMechanic, come to your home to diagnose the acceleration issue and pinpoint the cause of the catalytic converter problem.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Every three months, catalytic converter and muffler must be replaced

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: Truck runs fine most of the time but sometimes when its raining it won't crank and there is no noise at all.

Hi and thanks for contacting Your Mechanic. For the no start situation that you are encountering, check the wiring to your starter and make sure that the wires are tight and clean. If the wires are clean, then check the...

Q: Oil leak 1997 Chevy Blazer 4WD

Hi there. The oil leak could be, nothing more than, a loose oil filter. Another possibility, a leaking oil filter adapter gasket. Oil likes to travel down (via gravity) and should be properly diagnosed as there are several possible places...

Q: Transmission clicks and jump while shifting in stop and go traffic

Hello. This vehicle has a history of transmission problems. Most of the time it is because the second gear band fractures. When this occurs, it has trouble holding several gears properly and causing shifting issues. It may also be caused...

Related articles

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...
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...
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...