Skip the auto shop - Our mechanics make house calls

Q: My car won't start. I looked under the car and the catalytic converter was smoking.

asked by on

check engine light came on all of a sudden the it was putt putt i shut it off then tried to start it again and didnt start looked under my car and the converter was smoking....it is rusted there do i need a new converter?
My car has an automatic transmission.

Hello. The first task is to determine what problem codes there are since the Check Engine Light is on. Quite possibly, something has caused a "way too rich" fuel mixture, making the engine choke down and clogging the catalytic converter. You definitely want to resolve the problem before getting the catalytic converter hot with fuel in it - a fire will result.

I would recommend having a certified mechanic, such as one from YourMechanic, come to your location to determine why the car is not starting and suggest the needed repairs.

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
  1. Home
  2. Questions
  3. My car won't start. I looked under the car and the catalytic converter was smoking.

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: Hard to turn steering wheel

Hello. If the noise is like a groaning or squealing noise, then it sounds like the power steering pump has failed. I typically start by making sure that the belt on the engine is tight. If it is not, then...

Q: Speed sensor p01443 code

Hello. The speed sensor is located on the left rear of the transmission. It should be accessible from the bottom of the transmission. The catalytic converters should not have to be moved in order to get to the sensor. Most...

Q: It got really cold the next morning. I went to start my car and my belt will not turn. I drove it the day before the cold no problem.

Hi there. There could be a few things that could be going on. Either the battery was low on a charge or low on water and froze up causing the vehicle not to start up, or when the oil change...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...