Mass Air Flow help?

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ZenkiOwns
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I have a '93 vert with a little breathing problem.

My biggest question is:

Do all DOHC Ka's have the same MAF?

I purchased the car idling fine, but not wanting to rev past 2.5k. After a little diagnosing and multiple phone calls it's dagnosis was indeed the MAF.

My MAF had been hacked/cut/spliced/glued/ and taped together so much that I'm not even sure if it's the right one for the car. It runs EXACTLY the same without it than it did with it wired up.

Refering back to my question, My buddies '89 SOHC doesn't have the same MAF that I do, But neither does my friends kouki.

Little Help?

Searching did prevail, but didn't come up with any visuals, thus not actually helpibg me.

Thanks in advance.


sledrick
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wow same problem that my fastback had!! but you are in luck, i snatch a MAF sensor off another KA and it has been working ever since

just find another KA from 90-93
Modified by sledrick at 11:41 PM 8/9/2007

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My RB25
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Your mistaken. Not 90-93, he needs a MAF from a 91-94. You do realize the SOCH was only in 89 and 90's right? 91 they started with DOHC and the sensor changed.

The MAF on the E (89/90) has 3 wires. The MAF on the DE (91+) is a 4 wire sensor. That coulda been a nasty little headache. Also if you get a used MAF, which I don't suggest since their wear items, but if you do, make sure to clean it up with some Mass Air Flow Cleaner, NOT Carb Clean or Intake Cleaner. Good luck.

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ZenkiOwns
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Hmmm akward situation then. DOHC with 3 wires. Tracked everything down and found no fourth wire. How much of a headache have I gotten myself into?

So for clarification, The s14 MAF will not work?

180fan
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nope, not on your sohc

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ZenkiOwns
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180fan wrote:nope, not on your sohc


'93=DOHC

180fan
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oops. dohc to dohc is ok.

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My RB25
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I can look up in my scanner at work what the four wires are for the MAF, so maybe it'll give you better idea of what your looking for, but besides that bro you on your own.

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ZenkiOwns
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That would help tremendously. It would be nice to have a little idea what I'm looking for . The color coordination would make it a whole lot easier.

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My RB25
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Alright, when I get back there from lunch I'll check it out. I doubt it'll have the colors, but you should be able to identify them because if memory serves me correctly I think there's a battery v wire (12v +/-), but anyone with a DE could help you with that.

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Sorry for the wait, I kept getting side tracked at work, then it would get busy. But anyway, I got copied it down this morning, I heard the DE is a 4-Wire connector, but the diagram on the scanner only gave me three wires, starting with #2, odd, but anyway.

If your looking at the connector with the two little slots pointing up, the one on the left is Ign (+) from ECM Relay, middle one is ECM (-) and the one on the right is the MAF Signal. Now there may be a wire before the Ign (+), it was marked on the diagram with a - , meaning there might be a wire there.

The KA24E MAF is also a three wire, this is looking at the connector with the two slots facing DOWN. Left wire is MAF Signal, middle is Ground (Black) and right is Ign (+) (White/Black). The MAF Signal wire also looked black, but it just so happens that when I tried to get a better look at what color the MAF Signal wire was my MAF ground broke

Naturally this will happen 5 minuets before I have to go to lunch and I was left with about 2 cm of wire (from the connector) to solder, fun. It turns out that for some reason, whoever had this car before had two wires coming from the harness going into the MAF, soldered together, which then in turn solders to the MAF Ground. I soldered the wire back together, gave it a nice tape job and she runs, but this is gonna bother the hell outta me, I'll rip apart the harness one day soon to find out whats going on in there.

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ZenkiOwns
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That's my problem as well. I took a closer look, and my ground has TWO other grounds spliced in and taped together.

Man oh man. Why would anyone do something so unecessary?

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I have no idea, but my car runs fine. I noticed a weird looking ground going to my coil bracket when I did my timing chain. It looked ghetto rigged, but the car was running fine, I just attached it when I was done.

After I broke the ground last week, it got me thinking, it's possible that he MAF ground was bad, so they just soldered in a jumper wire instead of finding the problem. IDK as I said one day when I have nothing to do and get modivated I'll look into it. But until then I'll keep letting my car run the way it is, fine.


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