MAF testing
Thread Starter
Racer
Joined: Dec 2001
Posts: 392
Likes: 0
From: Gallatin TN
MAF testing
Hello.
I have a digital multimeter and MAF sensor test tool I purchased from Mid America. I'm not 100% sure on how I am supposed to use it. The instructions mention 10 ohm's. Yet on the multimeter I only show 20 ohm's.
Can anyone assist me in making sure I'm using the multimeter to test this correctly?
Thanks a bunch!
Bill
I have a digital multimeter and MAF sensor test tool I purchased from Mid America. I'm not 100% sure on how I am supposed to use it. The instructions mention 10 ohm's. Yet on the multimeter I only show 20 ohm's.
Can anyone assist me in making sure I'm using the multimeter to test this correctly?
Thanks a bunch!
Bill
Burning Brakes
Joined: Feb 2000
Posts: 958
Likes: 1
From: SF Bay area, CA USA
Re: MAF testing (Billz89)
I am not familiar with a way to test the MAF with a multi meter. Generally, If it is bad the car should run the smae with it plugged in or unplugged. You might try tapping on the MAF while the engine is idling to see if the tapping efects the idle. It should not change the idle. Do you have any codes that make you think the MAF is bad?
Thread Starter
Racer
Joined: Dec 2001
Posts: 392
Likes: 0
From: Gallatin TN
Re: MAF testing (weekendwrench)
In the Mid America catalog I saw a section for testing tools, which included a digital multimeter and a Mass Air Flow Sensor Test Tool. As I said in the original posting, the instructions mention 10 ohm but the tester has 20 ohm. I'll look at it again and see if it makes any more sense, but I've worked with the old analog multimeters and never had problems using them before.
As far as symptoms... a few weeks I drove it a mile and it worked fine. When I left the grocery store the car would start but the engine would die when I gave it gas. When I disconnected the air intake hose from the air tunnel the car would start and run... rough, but at least it would run. I managed to drive it home like that.
Bill
As far as symptoms... a few weeks I drove it a mile and it worked fine. When I left the grocery store the car would start but the engine would die when I gave it gas. When I disconnected the air intake hose from the air tunnel the car would start and run... rough, but at least it would run. I managed to drive it home like that.
Bill
Melting Slicks
Joined: Apr 2002
Posts: 2,118
Likes: 0
From: St. Charles, MO Route 66 Corvette Club
Re: MAF testing (Billz89)
Bill: I did the same as you in that I purchased a MAF testor from MA and tried to use it with my digitial Fluke meter. It was worthless!!! I had to get an engine scanner to see how bad my MAF really was. It was shot and I did not get any computer codes??? I do not know how to help you except to advise on the scanner or find a friend with a good MAF and swap out to see if that solves your problem. I can tell you that the MAF is the most expensive sensor on the car! If you have to buy a new one, suggest you get a price from Jeff Kopp. Regards, Sam. (PS: I once lived in Hendersonville)
Thread Starter
Racer
Joined: Dec 2001
Posts: 392
Likes: 0
From: Gallatin TN
Re: MAF testing (Sam Lam)
... If you have to buy a new one, suggest you get a price from Jeff Kopp. Regards, Sam. (PS: I once lived in Hendersonville)
Thanks.
Bill
Instructor
Joined: Nov 2002
Posts: 159
Likes: 0
From: Lusby MD
Re: MAF testing (hngacurv)
Your 20 ohm on the multimeter is probaly the scale setting. Most digital multimeters will give you scale settings (ohms 2,20,200,2k etc.) these scales are the max amount of ohm's you can measure in that particular scale.
Hope that makes sense.
:seeya
Hope that makes sense.
:seeya
