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Engine idling issue

Tiny
JOSE D
  • MEMBER
  • 2009 MITSUBISHI LANCER
  • 140,000 MILES
I changed the mass air sensor it took care of the problem for about a few weeks then it came back. I thought it was a faulty sensor so I replaced it and again it worked for a week or two and then started doing it again. What could it be?
Friday, May 15th, 2020 AT 2:25 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,650 POSTS
Are you using an OEM part? I have had issues with aftermarket lower priced parts failing. Normally, I would tell you to check for engine vacuum leaks, fuel pressure, and things like that. However, since the new part fixes it for a couple weeks, it sounds like a bad part.

Is the connector clean and tight, free of corrosion? Did you check for diagnostic trouble codes?

Let me know.

Joe
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Friday, May 15th, 2020 AT 8:31 PM

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