Q: How often do you replace a catalytic converter?

asked by on

Replaced factory original cat with aftermarket part at 180000.. Car failed emissions in California after 10 000 miles (just over 2year warranty) and was replaced with another cat and was 1 point away from failing after another 10000 miles. Mechanic recommends replacing it again. Is this what I can expect because the car is so old?

My car has 200000 miles.
My car has an automatic transmission.

This would all depend on the quality of the catalytic converter and whether or not the engine is running rich. If the catalytic converter installed was not of OEM quality, this can be part of the reason that it did not last. It is also possible that the engine is running rich. This means that excess fuel is being delivered to the engine. If this is the case, the catalytic converters can foul out much faster than normal. If this is the case, I would recommend having your vehicle inspected for a rich running condition.

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. How often do you replace a catalytic converter?

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: Q: Window not rolling up.

Hello! A window losing operation can be the result of a failed window regulator and motor assembly. Have a mechanic inspect for electrical faults concerning the window first. Are both front headlights and tail lights not turning on? This may...

Q: My 95 Mitsubishi 3000gt won't start. All the lights turn on, battery is good. I don't know what too do

I'd recommend having a mechanic come to you and check it out to see if you have a starter or a ignition/fuel problem. There's not enough information for me to really narrow it down for you. I'd recommend getting some...

Q: Overheating 335xi, new hoses/no leaks, waterpump is fine, no heat, used stop leak but car sat around for 2 months.

Hi Marc. Thanks for contacting us today. In most cases, if your heater does not produce hot air, then the issue is that the heater core is clogged with debris. Using stop leak products tends to create this problem. It's...

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.