How to Test a MAF or MAP Sensor With a Multimeter - Plus an Operations Guide

How to Test a MAF or MAP Sensor With a Multimeter - Plus an Operations Guide

Ratchets And Wrenches

8 лет назад

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@macegarage9603
@macegarage9603 - 16.05.2025 09:32

Hi Mr. RNW, Mark here from pH, how are you doing.

I found this sensors, electrical wirings videos of your very helpful specially to me & other beginners in auto electrical.
Thank you!

I just want to ask 2 questions:
1) should the hot wire voltage depends in to car models ,
This first car +supply got ~5Volts (Toyota) then the Ford your cutted video got hot wire supply +12v volts.
Which is which , or its just really depends on car makers?

2) getting right ground wire thru continuity test, I notice your not removing or reminding that we should remove first the negative battery? Isnt it?


3) last 1 more, by getting the ground (-) wire can i just probe @ positive then get the other probe to the pins? In that way its other way around of getting the negative.,

Tho i like also the procedure of removing the negative post & probing to the pins, isnt it much safer?

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@Ahmed-cb5ne
@Ahmed-cb5ne - 23.04.2025 15:50

can you show how to test MAP and MAS on Camry 2018 hybrid LE? and what the voltage and the reading should looks like

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@marywever164
@marywever164 - 14.04.2025 18:56

Hi there, I need help.
How to find the map sensor in 1G-FE engine Toyota Mark II / or Lexus I S 300 from year 2002

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@uphill248
@uphill248 - 17.12.2024 11:46

Can a car have MAF, MAP and IAT? Also can you use the same cleaner for all of them?

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@MartinZarefoss
@MartinZarefoss - 24.11.2024 18:43

I like this guys videos, be checking him out .

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@daboys66
@daboys66 - 04.11.2024 02:58

Excellent video and demonstration!Do you have a video for checking vacuum leaks i have a 94 ford f150 5.0 XLT

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@Malak-dl9ky
@Malak-dl9ky - 06.10.2024 12:21

U are good

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@JakeGamiao
@JakeGamiao - 27.09.2024 16:13

I love the topic. Must be a very good subject. I feel u know what u are talking about. The PROBLEM???: You are EATING YOUR WORDS!. Suggest that you take a good diction instructor. Looks like u can't open ur mouth when you speak.

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@NZbluesky
@NZbluesky - 20.08.2024 09:04

8 YEARS AGO! You sir, are a shining light to people like myself! An old electro mechanical engineer... 2 million views? Fabulous teaching! Greetings from NZ

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@rick9021090210
@rick9021090210 - 11.08.2024 09:27

Its been 8 years... did you ever replaced the MAP sensor and retested with the multimeter to see that voltage go up as you accelerated? I couldnt find the video... Cheers!

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@davidessien5465
@davidessien5465 - 04.07.2024 11:06

Nice video! ❤
However, to check for air leak it's better to use a smoke machine to avoid hazard.

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@ex8280
@ex8280 - 04.07.2024 08:45

Dang 2 Million DiY'ers was helped by this video. Congrats.

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@StormFlinix
@StormFlinix - 02.07.2024 01:38

Been watching your vids for years. You know they're good when I come back and refer to them while on my projects

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@esperancengaffaousadou9717
@esperancengaffaousadou9717 - 20.06.2024 18:14

Thank you for the video

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@esq5011
@esq5011 - 10.06.2024 08:53

You should test all connections for voltage and not just stop after you find the 5v. My Nissan had a 5v and a 12v.
If you accidentally touch the positive terminal of a 12V power source with the positive lead of your multimeter set to measure resistance, it could potentially cause damage to the multimeter.

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@gcerem
@gcerem - 02.05.2024 05:51

tested MAF sensor as described and found voltage did not go up or down with RPM. Got a new MAF sensor and same thing - no voltage change with RPM change. its on a a 2004 buick regla LS. what is the deal? seems like new MAF sensor is bad too or something wrong with test. Thanks for any help!

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@trevorstieger6762
@trevorstieger6762 - 01.03.2024 07:51

Will map or maf produce a p0403 code?

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@LukeSchiralli
@LukeSchiralli - 26.02.2024 13:38

Great video, very informative and easy to follow thanks!

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@nainarkumar
@nainarkumar - 24.01.2024 14:44

Thank you Master..

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@dineshkrisahnan9929
@dineshkrisahnan9929 - 23.01.2024 10:15

ok, nice can you make a air mass or tempture sensers etc of MERCEDES BENZ. C 220, 1996 , ELEGENC, PLEASE PREPARE A VIDEIO EXPLANATION, PLEASE,

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@robertoibarra3542
@robertoibarra3542 - 21.12.2023 08:47

Thanks for share information

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@nealeng.1063
@nealeng.1063 - 22.10.2023 18:59

Thanks for this very informative information. Great details !

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@AlvinHanson1708
@AlvinHanson1708 - 21.10.2023 19:35

😎

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@UptownStore-y6e
@UptownStore-y6e - 19.10.2023 07:23

Great video, be nice to see how it works on newer model cars. Can't pull on the acceleration the same way. 😅

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@figgiefigueroa7372
@figgiefigueroa7372 - 18.10.2023 19:52

Thanks you 🎉🎉

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@gasgas2689
@gasgas2689 - 28.08.2023 00:36

I love this. I must learn more. I have been fixing cars for 50 years, but always the older non-computerised cars. Now I have spent a thousand $ on incompetent garages using their computer diagnostics and believing the computer instead of using the very few brain cells the Lord God gave them. From now on I will watch and learn from you.

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@friguy4444
@friguy4444 - 03.08.2023 01:26

These test are assuming there is no problem with the car that could be causing the MAP sensor to read wrong or throw codes. How can i test the MAP
sensor outside of the car?

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@johncollins8304
@johncollins8304 - 27.06.2023 21:26

And if your car doesn't run!!??

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@carlosgavino6874
@carlosgavino6874 - 18.06.2023 22:25

You are so awesome thank you for this straight to the point instructional thank you

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@kukwantura3159
@kukwantura3159 - 14.06.2023 17:30

I try this but when i hit pedal slowly the voltages reading is going down.

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@johnlong384
@johnlong384 - 03.05.2023 02:56

Thanks!

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@AmharicMusicLyricsVideo
@AmharicMusicLyricsVideo - 13.04.2023 01:45

you are a good mechanic u explain with the mechanism how it works also the volt resistance testing failure solution amazing

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@electron-1979
@electron-1979 - 07.04.2023 15:09

Put some tape over the exposed sections of paper clips and meter leads

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@andrewrobinson2869
@andrewrobinson2869 - 23.03.2023 15:34

What if it’s a 8 or 9 pin. Pajero io 2002 2 ltr

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@spike121964
@spike121964 - 03.03.2023 10:19

Love all your videos. Great work

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@golfnut533
@golfnut533 - 01.02.2023 13:05

Great info, thanks for your efforts. 👍

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@jeffreyminiokoakopukut1655
@jeffreyminiokoakopukut1655 - 17.01.2023 13:07

My Mitsubishi lancer station wagon still has rough idle or cuts off at Nuetral/Park even after I replaced 4 spark plugs and air filtet.Need some idea Bro...thanks

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@michaelking42
@michaelking42 - 04.01.2023 06:41

Great, great video, thank you for taking the time and effort to make it.

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@rinorgucati5128
@rinorgucati5128 - 10.12.2022 16:51

could you have a bad map without engine light ?

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@edwardharvey5839
@edwardharvey5839 - 10.12.2022 03:22

I understand everything now, Thanks!

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@brianreed5425
@brianreed5425 - 04.12.2022 00:55

every educational :) thanks for breaking it down barney style

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@AraceaeFanatics
@AraceaeFanatics - 08.11.2022 19:00

Very helpful videos.

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@mickicolonna4071
@mickicolonna4071 - 04.11.2022 03:20

Never mind mass airflow to fuel sensors. The end.

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@mickicolonna4071
@mickicolonna4071 - 04.11.2022 03:14

what about Matt.

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@hecky6933
@hecky6933 - 30.10.2022 20:42

can a bad map sensor cause a rich condition too?

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@imagegraphics16
@imagegraphics16 - 04.10.2022 19:41

Nice video thanks! my plug is reading 2 constant ground,(mass sensor) e250 2006' whats wrong?

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@forsdykesavusi1432
@forsdykesavusi1432 - 26.09.2022 13:42

Thank you for the knowledge that share especially for new mechanics like me god bless you

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@ruben85374
@ruben85374 - 24.09.2022 22:16

Can the MAP sensor cause an intermittent misfire and sometimes shuts off with no check engine light on when it happens. This only happens at idle and not every day 🤔

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