Thread: How well is your MAF performing?

that's freaking scary - with that kind of % error, how can anyone test anything on our cars if there's such a waverance of readings?
here's a pdf of my voltmeter currently:
http://www.equus.com/downloads/manuals/4320.pdf

so the % error for example on the dcv is 0.8%!?!

wow... now I'm really interested ot see what mine is.

I just checked the manuals of every meter sold at harbor freight and they all have the same accuracy as the one posted above. Is this a standard or something?

What is the accuracy on those meters ?

If you want a better accuracy/reading you buy a meter with a scale near your measurement, ie 200V for 120V, 20V for 12V, 2V for 1.3 V etc

accuracy on harbor freights were .8% on a scale of 1000 it said in the manual but shouldn't that be 999?

No there is not a standad, pay more money and you get better accuracy and more scales to use.
just be aware that the error is based on Full scale readings, and they don't go out of their way to make that clear, its not 0.8% of the reading, if you are measureing 0.6V on a 999V scale the measurement isnt worth anything if the error is +- 8V
That meter in the PDF has a 2V DC scale, 0.8% of 2V is +- 0.016 Volts, Good enough for me !!!

well they round 999.9 to 1000

according to this manual you can set it for a range of 20v with an accuracy of .8%. So unless my calculations are wrong your reading can vary +/- .16 on the reading. I think that is accurate enough to test your maf. I would think the reason there is voltage "ranges" in the FSM is partly due to the accuracy of volt meters themselves.

An inexpensive meter is fine if you have a scale near your measurement.
I think we have beaten this to death !!!

Thank you though because it's thursday before a long weekend and this thread helped to pass the time