MAF test p0101 part 2

No description available.

Category:

Autos & Vehicles

Tags:

• MAF
• mass
• air
• flow
• meter
• test
• diagnostics
• code
• p0101

[contagiousFX]

You were testing a known good MAF sensor in the video the whole time. We wanted to see what a bad MAF would show.

[WalkaboutTech]

Duane,Your efforts are appreciated by me, Good effort, Good Job ; Keep them coming I enjoy learning from an experienced Tech . Thank You, WalkaboutTech

[RandallFlaggNY]

What's the frequency, Kenneth?

[dmorley100]

I'm with spelunkerd on this one. I didn't see anything as far as an actual glitch in the MAF signal which leads to the question of how exactly did you arrive at the conclusion of a bad MAF sensor? Use of a gas analyzer? Volumetric efficiency test? Inquiring minds wanna know. BTW, that stuff I sent you around 1 1/2 years ago I think would tie really well into this video series.

[TrueBlueEG8]

Someone should do a rave remix with Duane repeatedly saying "the frequency" over and over!

[spelunkerd]

It seemed like you went through complex diagnostics on the MAF, and you didn't find anything wrong. Then you replaced the device and problem was solved. The explanation was that the frequency output was a shade incorrect from the perspective of the PCM. Did I miss something?

[lowridermig]

What about performing a V.E test. I understand front door back door diagnostics. (scoping,scanning) But I have more than 90% of the time have diaged maf's by doing VE test.

Great videos btw.

[Gizmopflege]

Great info thanks!

[mrexecutive1]

Another simple way to test if a mass air flow sensor is going bad, is by tapping on it while the engine is running, listening for any engine rpm changes.. Wondering how it would look on the the scope when this type of test is performed.

[TheRedcarbon]

Duane, great video on explaining hertz frequency but i got a question. When you used the lab scope to measure hertz frequency using the volts scale, does the ecm sees or measures hertz frequency in 1 millisecond time frame?