Q: Bad catalytic converter and white smoke from tire

asked by on June 24, 2016

The report from the mechanic was that my SUV has a bad catalytic converter. I tried to drive it recently and it only drove about 15 miles. If I lightly pushed the pedal, it would go slightly only over 30 mph. Going uphill, there was no power and white smoke started coming from the driver’s side front wheel after about 12 miles of driving. For a couple of minutes, the smoke was very bad and then instantly stopped. It smelled like burning rubber. Is this problem from the catalytic converter or is it something different?

Brakes, Steering and Suspension Inspection $94.99 - $114.99 Get a Quote

Hello. This does sound like a problem related to the catalytic converter being faulty. The smoke from the driver’s side front wheel could be caused by the front driver side caliper locking up. This may make the wheel difficult to spin and may also be causing the white smoke. When the catalytic converter is causing drivability issues, it may get very hot to the point that it turns red. The extreme heat could cause the brake fluid to boil, which may also make the front wheel lock up. I would suggest that you have a certified technician, like one from YourMechanic, come and inspect the brake system as well as the catalytic converter.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I wash the wheels on my truck?
Over time, the tires on your truck will become dirty. Cleaning the wheels regularly will ensure that they maintain their shine. To clean the wheels. Use Motorcraft Wheel and Tire Cleaner to clean the wheel. Remove tar and grease. Rinse...
Brake fluid level keeps going down
Hi there. Your vehicle is experiencing a leak. Whether it is in the brake master cylinder (not visual) or an external leak by the wheels can be determined only in person. It is also possible that shop did not bleed...
Car started stalling after being stopped in traffic - 2015 Infiniti Q50
Hello. There are a few things that can cause this, but the most common cause of this is a failing throttle body (https://www.yourmechanic.com/services/throttle-body-replacement). I have changed a number of these for similar problems. If the throttle body is fine, then...
My car is making a knocking noise and there's a fuel leak
Hi there. From the description you have given, there are apparently a combination of problems with your vehicle. The fuel leak needs to be addressed first, this is a safety concern. Not knowing the area of the fuel leak requires...
When I press on gas pedal it makes a weird noise til you let off it.
Hi there: If you're hearing a noise while operating your gas pedal, there are a few items that could cause this including a vacuum leak, exhaust system leak or even a problem with the gas pedal or throttle cable itself...
My temperature gauge is fluctuating and my car is not putting out heat anymore, I tried putting coolant in it and there are no leaks.
Hi there. Check the coolant temperature sensor and see if it has a loose connection on the wiring harness. This will cause the gauge to fluctuate up and down as the engine is running. For the heater not working, check...
question
Chime noises, or any alarms for that matter, that just occur out of nowhere represent electrical faults that would have to be traced during an electrical components diagnostic (https://www.yourmechanic.com/services/electrical-components-are-not-working-inspection). The only "connection" between the chime going off when the accelerator...
Where do I find the map sensor on my 2006 Cadillac SRX.
Hello, thank you for writing in. On your particular vehicle, the MAP (manifold absolute pressure) sensor is located on the firewall. This is why they refer to it as a "firewall mounted MAP sensor". The firewall is the wall between...
Car starts and then dies
Hi There, A few different things will usually cause the car to start and then die (https://www.yourmechanic.com/services/car-starts-and-then-dies-inspection). A bad ignition coil (https://www.yourmechanic.com/services/ignition-coil-replacement) can cause this if it is beginning to fail, resulting in intermittent starting problems. A dirty or faulty...

Related articles

Why Do Diesel Vehicles Emit Black Smoke?
There’s There’s a common misconception among drivers of gasoline engine cars that diesel engines are “dirty,” and that black smoke is emitted from all of them. That’s actually not the case. Take a look at any well-maintained diesel car, and...
Pontiac Certified Pre-Owned (CPO) Car Program
If If you’re in the market for a used Pontiac vehicle, you may want to check out cars under their certified pre-owned program. Many manufacturers have a certified pre-owned (CPO) program, and each one is set up differently. Read on...
How to Avoid Muffler Repair
Mufflers break when debris builds in the undercarriage, the muffler rubs against driving surfaces, or there is smoke emitting from the engine.