Howdy,
Some of You may have notice, I've been cleaning my MAF sensor lately. Cleaning helped for a couple of weeks, but yet again I see the that the sensor is giving inaccurate readings. I decided to replace it. Which brand should I aim/avoid? Any tips?
Thanks in advance,
Mike

 

Finally just threw in the towel , huh Mike... Did you eventually find the resistance values or did you just measure the frequency output?

Either way , hopefully a new MAF will get it straightened around..

 

Hey Jone,
I am surprised You still remember my question on a resistance Anyway, that time I took the digital trace with my DSO (in case You're interested here it is, and that is for a *not* working one):
Finally, I did the cleaning to the MAF in IPA alcohol and it made the difference. But within the days I am getting somewhat closer to the symptoms I've had before cleaning. I am pretty sure my MAF is offset for the low flow. Whenever I start driving, my O2 sensors are seeing a lean mixture on both banks so STFT/FT goes high and then, on deceleration, the O2 sees my mixture is rich and trims go negative.
It's not a big value, around 10% (that should be acceptable) but I personally don't like the feeling when You step on the gas and prior You get the full power, You have to wait till ECU recalculates the trim to a positive value and then You go. No big deal, You can live with that, but I don't like half measures. Like someone said "they always bite Your back unexpectedly".
As far as the cleaning had helped in the past, and driving with MAF disconnected is perfect I have the problem well pinpointed.

Just the question is there any good brand I should look for or a bad brand I should avoid? There are so much Chinese MAFs on ebay, that I'd better make sure before I place an order.

Cheers,
Mike

 

Now that's good stuff right there... I'll let others chime in on brands..I was just curious as to how you nailed it down...Awesome.. Thanks for sharing..

 

Personally, I would buy an AC-Delco.

 

Your truck in the video sounded like a diesel.
(I see you're from Poland.)

For my own sake, with readings such as this how do you know what the nominal values are with say live data readings or simply taking a volt meter to the sensor.

As far as brand, I would get Delphi (most likely OE and cheaper) or AC Delco.
2000 CHEVROLET BLAZER 4.3L V6 Mass Air Flow Sensor | RockAuto

You're also certain the pig tail is good?

 

I thought of how to find out, and I found it quite simply. I just gonna need a good working MAF. Then I'll wire them on a bench - a power line, and a ground. Once powered, they shall both transmit the signal. I believe my own has a bit offset for low values, so I expect to see the frequency difference on my DSO. Then I could blow into, to compare characteristics.
Voltmeter would be out of use, unless it has a frequency counter.

Thanks, I'll go for Delphi I think.

 

I have a cheap MAF that I got off of Ebay and it works great. The only problem is that they are only good for about 1 1/2 years. I think next time I will just spend the extra cash and get an AC Delco one.

 

Thanks. That is an info I was actually hoping for. I went for Ac Delco.

By the way, I've been browsing ebay offers and it seems the MAF I have in my truck (alu square brackets with a plastic mold in between) is obsolete - found just a bunch of a refuribshed units. The new units from AC Delco are 213-4527 ones. The newer model plug is wider and has more pins - that may look confusing - but a plug<->socket adaptor seems to be attached.

Any rumors why did they discontinued the old one...?
Brgds, Mike