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Mass air flow replacement instructions

Tiny
TOMN66
  • MEMBER
  • 2005 TOYOTA SIENNA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 97,000 MILES
When you try to acelerate, the engine smothers. There are two other readings given to me by Advance Auto. Fuel system 1 - open loop. Fuel system 2 - open loop. The o-ring was bad on the MAF. I changed it, but no help. The floor in my garge is cold black from the sputtering exhaust, when you acelerate.
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Tuesday, January 5th, 2010 AT 1:40 PM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

I attached the testing for the MAF sensor. It is on the air intake between the air filter and the throttle.

https://www.2carpros.com/articles/how-to-replace-a-mass-air-flow-sensor-maf

https://www.2carpros.com/articles/how-a-mass-air-flow-sensor-works-maf

https://www.2carpros.com/articles/engine-black-smoke

Do you have any codes set in the system?

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Roy

INSPECT MASS AIR FLOW METER

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a. Output voltage inspection.
1. Apply battery voltage across terminals 1 (+B) and 2 (E2G).
2. Connect the positive (+) tester probe to terminal VG, and negative (-) tester probe to terminal E2G.
3. Blow air into the MAF meter, and check that the voltage output fluctuates.

b. Resistance inspection.
1. Using an ohmmeter, measure the resistance between terminals 4 (THA) and 5 (E2).
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Sunday, February 21st, 2021 AT 9:01 AM
Tiny
SJCOULTER
  • MEMBER
  • 1 POST
  • 2001 TOYOTA SIENNA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
Hello,

I was just wondering on my specific vehicle model is the location of my MAF sensor?

Thank you
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Wednesday, February 24th, 2021 AT 11:50 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

I attached the location of the sensor below for you.

https://www.2carpros.com/articles/how-a-mass-air-flow-sensor-works-maf

https://www.2carpros.com/articles/how-to-replace-a-mass-air-flow-sensor-maf

Roy

REMOVE MAF METER
a. Disconnect the MAF meter connector.
b. Remove the 2 screws, MAF meter and O-ring.

HINT: At the time of installation use a new O-ring.

INSTALLATION
Installation is in the reverse order of removal.
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Wednesday, February 24th, 2021 AT 11:50 AM (Merged)
Tiny
OLDCATJR
  • MEMBER
  • 2 POSTS
  • 2001 TOYOTA SIENNA
  • 3.0L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 111,000 MILES
I have a 0110 OB2 code and have replaced the MAF. Some tell me the IAT and MAF are one and some say there is a separate IAT.
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Wednesday, February 24th, 2021 AT 11:51 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You do not have an IAT only a MAF which is part of an assembly/duct work. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Wednesday, February 24th, 2021 AT 11:51 AM (Merged)

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