Car shutting off

Asked by Apr 07, 2018 at 01:52 PM about the 2005 Mitsubishi Lancer ES

Question type: Maintenance & Repair

I have a 2005 Mitsubishi Lancer es I just changed
the mass air flow sensor and I believe the
downstream O2 sensor (the one underneath the
car) now my car runs a little smoother but the check
engine light came back on and my car when idling
or at lights or even reversing it shuts off or I have to
press the gas to keep it from shutting off what is the
issue now because all of a sudden the new code
reads emmisins issue catalytic converter but that
didn’t come up the first time and it didn’t start with
the shutting off and new emmisions code until I
changed those two sensors ? What can be the
issue

4 Answers

18,830

What are the codes?

Emmisions code p0421 bank 1 catalyst efficiency low

18,830

Sounds like the catalytic converter busted apart and clogged the exhaust.

I have a 2002 cedia lancer did a engine wash car starting but cutting off an when i mash d gas peddle it backs fire

Your Answer:

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