Skip the auto shop - Our mechanics make house calls

Q: truck won't run at hight mph

asked by on

my trucks was marking me cat code for 2-3 months but i steal ran it and i changed a rear tire in emergency and from the it has been not running well i changes both cats and the check engine went away but steal runs the same

Hello. The rear tire change would not have anything to do with the operation of the catalytic converter. There is however a possibility that when the catalytic converter codes came up that this triggered other issues as a result of continuing to drive it.

As you may already know, the catalytic converter works to convert toxic exhaust gases to less harmful pollutants to dispel into the environment. When this is clogged and not working properly, this causes these gases to be backed up into the vehicle’s system not allowing it to properly release combustion gases. As a result, this can cause other problems which may have been the issue to begin with that originally caused the cat codes to show up. I would suggest having an expert from YourMechanic come to your home to diagnose the codes that showed up with a scan tool to download critical data and pinpoint the cause of the problem.

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: My car has trouble starting when the engine is hot, I never have a problem in the morning or when I get off work.

Hi there. It sounds like the ignition coils are getting hot and when the engine is shut off, the engine will not restart due to an ignition coil that will not produce a spark. Remove one spark plug wire at...

Q: Just picked up car from 90,000 mile service. They said tires are noisy, but they weren't when I dropped it off. What could it be?

If you take your hand and rub in each direction on each tire and it feels rough in one and smooth in the other direction then the tires were in need to be rotated and this may be the noise....

Q: clicking popping sound when turning sharp left

Hello there. Is your Jeep four-wheel-drive? A clicking or popping noise can come from a CV joint with a torn grease boot. The boot develops a tear or leak and the grease will leak over time until the joint is...

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...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...