The car runs but will not shift with a mass airflow sensor plugged in?

MATTHEWHOOPER

MEMBER
2010 MAZDA 3
2.3L
2WD
AUTOMATIC
280,000 MILES

If you unplug the mass airflow sensor the transmission will begin to shift again but the engine will then begin to bog.

Friday, September 15th, 2023 AT 5:15 PM

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Hi,

It sounds like the mass air flow sensor is faulty. Have you replaced it or tried cleaning it? If not, first, try to clean it.

Here is a link that explains how to do it:

https://www.2carpros.com/articles/mass-air-flow-service

If you do clean it, make sure to use a cleaner designed for the sensor. Also, if that doesn't resolve the issue, replace the sensor.

Let me know.

Joe

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Sunday, September 17th, 2023 AT 2:05 PM

MATTHEWHOOPER

MEMBER
2 POSTS

We have the mass airflow sensor so idk what to do to it.

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Sunday, September 17th, 2023 AT 9:04 PM

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Hi,

Do you have the original one or a new one? Or do you mean you installed the new one and nothing has changed?

Let me know. Also, let me know if you have scanned the can-bus for diagnostic trouble codes.

Take care,

Joe

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Monday, September 18th, 2023 AT 1:04 PM