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It's right after the airfilter box
The mass airflow sensor would be between your engine air filter box and the big engine air intake tube
Mass air flow sensor is mounted after the air filter.
On a 2001 Mercury Cougar : The Mass Air Flow Sensor is between the engine air filter and the big engine air intake tube
how do you clean mass air flow sensor on a 1998 Nissan altima? To clean the mass air flow sensor , you need to get a can of CRC mass air flow cleaener frm auto zone, Kragen, Pepboys, Sensor is attached to the tube (next to airfilter). again you need to use mass air flow cleaner ( CRC ). I use this on my ford windstar and Nissan sentra 05 and 95. it runs better after cleaning the mass air flow sensor.
Remove it carefully, spray the sensor wire with brake clean or alcohol, do not touch it, reinstall.
It can not be cleaned. Trying to clean it will mess it up.
In a 1998 Mercury Villager, the mass air flow sensor is located in the air intake tube. The air intake tube goes from the air box to the intake.
You can use brake cleaner to clean mass air flow sensor, ensure air filter is not clogged and sensor does not need replacement. What are symptoms?
There is a spray they sale at autoparts stores it'scalled mass air flow sensor cleaner works really good and it's sensor safe.
The Mass Air Flow Sensor can be cleaned with a spray sold at most auto part stores. Ask for it specifically.
The intake air temp sensor and the mass airflow sensor both mount near the air filter.