After oil change, light comes on

Tiny
SHAMEKALR
  • MEMBER
  • 2014 CHEVROLET CRUZE
  • 101,000 MILES
I had an oil change and maybe an hour later my engine light comes on. I take it to get a diagnosis and they said that the mass air flow sensor needed to be replaced. We replaced it and now my car engine light will not go off. Also, under the hood there is a burning smell and smoke with oil splatter under hood. The car drove fine in the thirty minutes that I drove it.
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Saturday, January 26th, 2019 AT 11:54 AM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi and thanks for using 2CarPros.

First, it is odd that it went bad after the service. Are you certain it wasn't unplugged? Also, as far as the check engine light, it will eventually go out after the vehicle has been run through several cycles, or you could clear the code using a scanner and it will turn off right away. Usually the shop does that when they do the repair.

As far as the burning and oil, either they didn't put the oil fill cap on fully or at all or the oil filter housing is leaking. If you have oil splashing under the hood, that can be a fire hazard and needs to be addressed. I would recommend taking it back to have them fix their mistake.

If you would rather check things yourself, first confirm the oil filter housing isn't leaking and that the oil filter cap is properly installed.

Next, make sure they properly attached the oil fill cap.

I attached a few pictures to help you identify parts. They are

Picture 1 shows where the filter goes, the filter and the cap

Picture 2 shows the filter cap and the o-ring that must be installed and not damaged.

Picture 3 Shows how to determine if the filter cap is properly tightened. Note: The filter cap is plastic and if over tightened, it can crack.

Picture 4 Shows the oil fill cap and how it should be installed.

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One last thing, here is a quick video showing how to use a scanner. If you have access to one, use it to clear the trouble code. That way, the check engine light will go out for you.

https://youtu.be/YV3TRZwer8k

I hope this helps. Let me know if it does or if you have other questions.

Take care,
Joe

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Saturday, January 26th, 2019 AT 8:56 PM

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