The Murder of a 2k2 MAF Sensor v.Exposed!
#1
The Murder of a 2k2 MAF Sensor v.Exposed!
Well, curiosity got the best of me. Took the one that crapped out on me apart. I'm not amazed...
With side door off:
With little bottom door off too:
Close up with both doors off:
Close up of what I probably fried when I blew it. It's the part of the sensor that gathers outside flow and send it to the circuit board for "analysis".
It puked...(removed the gel coating)
With side door off:
With little bottom door off too:
Close up with both doors off:
Close up of what I probably fried when I blew it. It's the part of the sensor that gathers outside flow and send it to the circuit board for "analysis".
It puked...(removed the gel coating)
#4
That is absolutely fascinating, Mike. (Seriously, I'm not being sarcastic.) I didn't expect to see a circuit board inside that thing. For some reason I was just expecting another little sensor, like the IAT.
Wow. Amazing pictures.
Can you actually tell where the sensor disconnected from the circuitry when it "blew"?
Wow. Amazing pictures.
Can you actually tell where the sensor disconnected from the circuitry when it "blew"?
#15
I used to supply the plastic housing for the Toyota MAF. Yes, it takes a lot to make the MAF. But for sure it is not worth $400. Less than $100 is more like it. Isold the housing with the terminals on it for $1.50.
Then Denso puts in the PCB and the potting (that's the gooey). I have seen the assembly of the MAF in Denso Athens, TN. The MAF we made were made obsolete just 2 years ago.
Toyota uses a new generation MAF. They are being made in Japan for now with plans to make it in Mexico.
Then Denso puts in the PCB and the potting (that's the gooey). I have seen the assembly of the MAF in Denso Athens, TN. The MAF we made were made obsolete just 2 years ago.
Toyota uses a new generation MAF. They are being made in Japan for now with plans to make it in Mexico.
#16
Hence it is critical for that sensor which is exposed to the IA to be clean. The circuitry should last. But then again, just like any failure, it will happen for so many pieces you make. That's the only thing that is predictable.
#17
If you got your hands on an original 2000-2001 MAF, that would show the difference.
#19
IAT->clips on MAF case->connector->wiring->ECU
vs.
IAT->clips on MAF case->MAF circuitry->connector->wiring->ECU
In other words, the 2k1 ECU knows to ignore IAT input from the MAF connector but the 2k2+ ECU knows to process IAT input from that same connector.
Just guesses.
#20
If the 2000-2001 MAF connectors are identical, that means the connector was originally designed to support more signals than it actually used... which means Nissan was proactively planning to move the IAT there.
Yeah... lots of guesses.
Yeah... lots of guesses.
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