MAF wiring help please

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JDMskrilla
Posts: 107
Joined: Fri Jan 02, 2009 9:22 am
Car: 1997 240sx se

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So i checked my codes and got a p0100(maf circuit) so i traced it to my signal wire. But, when i cut open the wire loom from the screw on the fan shroud to the maf plug there are three wires. black(ground) white/black(power) and white(signal wire). the signal wire and the black wire are joined together and again insulated. when I opened this insualtion to separate the two wires to see if they were cut, melted etc. i found a third bare wire no insulation.

So. after a long story my question is what is the bare wire. The wiring diagrams show only the three insilated wires (black, black/white, white).



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volcomskater773
Posts: 242
Joined: Fri Jan 02, 2009 11:10 pm
Car: S14

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its just extra insulation. nothing to worry about. it serves no other function.

JDMskrilla
Posts: 107
Joined: Fri Jan 02, 2009 9:22 am
Car: 1997 240sx se

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I know that there is an extra insulation around the already insulated wires. I was wondering why they would take two insulated wires and a bare 3rd wire and wrap all three in another insulation. What is the 3rd bare wire for? Ill try to get some pics...

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zach-Ka
Posts: 1549
Joined: Wed Oct 17, 2007 9:08 am
Car: 1990 240sx (SR)
Location: Greeneville, TN

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Maybe to ensure that the current going through the power wire doesn't effect the signal wire. Have you ever crossed a power wire over a speaker wire? It effects the sound with a horrible whine.Maybe the same concept?Just tape the two that were insulated, then tape them all together.. Thats what i did...

JDMskrilla
Posts: 107
Joined: Fri Jan 02, 2009 9:22 am
Car: 1997 240sx se

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well there is a problem with my signal wire so I am going to have to run another one from the maf to the ecu.

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volcomskater773
Posts: 242
Joined: Fri Jan 02, 2009 11:10 pm
Car: S14

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as long as your maf signal and maf ground are wrapped decently it doesnt affect anything.

JDMskrilla
Posts: 107
Joined: Fri Jan 02, 2009 9:22 am
Car: 1997 240sx se

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here is a picture. the bare wire is the one in question. also the insulation is metal on the inside as you can see???

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volcomskater773
Posts: 242
Joined: Fri Jan 02, 2009 11:10 pm
Car: S14

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all insulation my friend. trust me on this. 2357924587 maf swaps under my belt I can tell you.


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