Skip the auto shop - Our mechanics make house calls

Q: I have replaced the catalytic converter on a 2006 Lancer. Now the car won't start. It ran fine before the swap.

asked by on

I have replaced the catalytic converter an now the car will not start

My car has 100000 miles.
My car has an automatic transmission.

Hello there, many faults will cause a no start condition on your 2006 Mitsubishi Lancer. When problems immediately after work was performed the first step is to double check the work performed. Various common problems can prevent the engine from starting after repairs such as a wire left loose, battery unhooked, sensor left unplugged or a wiring harness fault. If you’re unable to pinpoint the issue yourself, a qualified technician, such as one from YourMechanic, will be able to diagnose your no start condition and make any repairs required to resolve the fault if necessary.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • I have replaced the catalytic converter on a 2006 Lancer. Now the car won't start. It ran fine before the swap.

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: Replace the battery and now the car turns over but will not start.. no spark ..key seems to have lost programming

Hi there. Replacing your vehicle's battery, should not have affected the vehicle's security system operation. Assuming there was nothing shorted, during the battery replacement, would rule out a fuse related problem. This may require a scanner to access the vehicle's...

Q: The car won't start the first time in the morning and only starts after a few tries

Hi there. In many cases, the hard cold starting issues you're experiencing are caused by fuel delivery issues or ignition timing problems. This could be caused by a dirty or faulty air fuel mixture sensor, dirty or clogged fuel injectors,...

Q: can a alternator belt make car not start because I was driving my car and I ran out of gas and i put a little gas in? belt broke

Hi there. It is very difficult to diagnose this type of hard to start issue remotely due to the fact that both issues; running the vehicle out of gas and the alternator belt being broken can cause the car to...

Related articles

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...
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...
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.