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Maf sensor disassembled with a question? Help

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Old 06-16-2019, 01:01 PM
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Maf sensor disassembled with a question? Help

I need a maf in my 86 irocz so I ordered one and since I don’t need the core I took my old one apart to see what is in side. Then I saw this... see pic... why are there 2 diodes soldered into it?

There are two diodes soldered in. Why??

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Old 06-16-2019, 02:16 PM
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Re: Maf sensor disassembled with a question? Help

Originally Posted by Joethrottle8
I need a maf in my 86 irocz so I ordered one and since I don’t need the core I took my old one apart to see what is in side. Then I saw this... see pic... why are there 2 diodes soldered into it?

There are two diodes soldered in. Why??
I do t see the diodes but I see two resistors.
Old 06-16-2019, 02:21 PM
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Re: Maf sensor disassembled with a question? Help

I’m not an electric savvy guy at all but yes that’s what I meant . The two resistors soldered on. I’ve got another one taken apart and there’s nothing on the other maf sensor .? Why are the resistors there?
Old 06-18-2019, 12:46 AM
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Re: Maf sensor disassembled with a question? Help

It's not going to be easy to explain. And ultimately it would only be speculation. Without comparison pictures to an actual original stock MAF, getting into pinouts, etc I am betting it has to do with fooling the ECU over a missing burn-off function or other circuit resistance requirements related to updated/aftermarket MAF hardware.

GD
Old 06-18-2019, 02:18 AM
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Re: Maf sensor disassembled with a question? Help

Thanks. I checked with a local mechanic and whe opened up another one that was junk and it’s definitely not supposed to be that way . I bet ur right about fooling some operation. I was just wondering. Thanks for taking the time to get back to me. Have a great day
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