O2 Harness

Black1987 · Oct 27, 2016

Thanks for the help electrical gremlins have plagued this car

Mustang5L5 · Oct 27, 2016

Without ecu hooked up.

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Black1987 · Oct 27, 2016

Mustang5L5 said:
Without ecu hooked up.

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I'll have to do it after work tomorrow appreciate the help

MUSTTANGUY · Oct 28, 2016

How to identify an o2 harness:
http://www.ponyperformance.com/tech14.html

Black1987 · Oct 31, 2016

@Mustang5L5 and @liljoe07 I should get no power or 12v at 46 when the key is on correct?

Black1987 · Oct 31, 2016

I think I had my orientation wrong. I got .01-.04 with key on and key on clutch in. Cranking it jumped to .40 volts. Shouldn't this be zero

liljoe07 · Oct 31, 2016

That small amount of volts is not an issue. You are good to go.

Black1987 · Oct 31, 2016

liljoe07 said:
That small amount of volts is not an issue. You are good to go.

Well when I took around the block it threw a 67 code. It bucked, then went like a BOH. Light went off. Came to a stop idle fluctuates CEL. Ran the codes and got 67.

Is there a picture of the where NGS is on the trans?

Mustang5L5 · Oct 31, 2016

Pass side. Top pigtail.

It's wired in parallel with the one on the clutch switch.

Try running codes with clutch pedal in the entire time.

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Black1987 · Oct 31, 2016

Mustang5L5 said:
Pass side. Top pigtail.

It's wired in parallel with the one on the clutch switch.

Try running codes with clutch pedal in the entire time.

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I had the clutch in and a/c off and ran them twice bc I thought I had the a/c on.

What issues does the NGS cause left unhooked?

I find it odd my car idle fine before and had ability to run codes but after the jumper it idles a lil rough , can't run codes, and drives better.

Back to the drawing board

Mustang5L5 · Oct 31, 2016

Idle quality and inability to run codes.

I would probably suspect the jumper is incorrect. I'll have to revisit in the am once I'm on a PC vs phone

So it wouldn't run with a3m but ran fine with a9l?

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Black1987 · Oct 31, 2016

Mustang5L5 said:
Idle quality and inability to run codes.

I would probably suspect the jumper is incorrect. I'll have to revisit in the am once I'm on a PC vs phone

So it wouldn't run with a3m but ran fine with a9l?

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Sounds good much appreciated

Black1987 · Nov 1, 2016

Mustang5L5 said:
Idle quality and inability to run codes.

I would probably suspect the jumper is incorrect. I'll have to revisit in the am once I'm on a PC vs phone

So it wouldn't run with a3m but ran fine with a9l?

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I honestly didn't see the last part of that, I only ran the A9L around the block. I can try the A3M tonight.

Before it ran worse with the A3M, so I didn't even try it. .

Mustang5L5 · Nov 1, 2016

So this is currently how you have it jumpered correct?

And this is what it was before?

Mustang5L5 · Nov 1, 2016

Black1987 said:
I honestly didn't see the last part of that, I only ran the A9L around the block. I can try the A3M tonight.

Before it ran worse with the A3M, so I didn't even try it. .

I don't think it's going to make a difference. I wonder if the trace on the A3M is burned since oyu ran the auto O2 harness with it.

When you have some time, open it up and follow pin 46 back to this trace and see if it looks burned.

Black1987 · Nov 1, 2016

Mustang5L5 said:
I don't think it's going to make a difference. I wonder if the trace on the A3M is burned since oyu ran the auto O2 harness with it.

When you have some time, open it up and follow pin 46 back to this trace and see if it looks burned.

Yeah I actually was about to get to that point. Would a trace starting to fail (burn) cause it to have intermittent or would it just not run at all?

Black1987 · Nov 1, 2016

Mustang5L5 said:
So this is currently how you have it jumpered correct?

And this is what it was before?

Yes, only difference is my jumper was purple

Mustang5L5 · Nov 1, 2016

So in your case, are you sure your engine harness is a 92-93 harness? Reason I ask is the pinout did change depending on years. From 89-90, the 5-spd harness was pinned with the top wire moved over 1 spot to the location circled.

What color is the wire here on the opposite side?

No matter what we do here, always double check that pin 46 before plugging a computer in if you move an pins around. Clutch in, while cranking. There should be no voltage on pin 46.

Mustang5L5 · Nov 1, 2016

Black1987 said:
Yeah I actually was about to get to that point. Would a trace starting to fail (burn) cause it to have intermittent or would it just not run at all?

Engine may run, but run poorly.

Black1987 · Nov 1, 2016

Mustang5L5 said:
Engine may run, but run poorly.

Black1987 said:
Here is what I have

The jumper connects the blue/yellow wire to a purple/yellow wire.

If I would jumper it the 89-90 way, it would be like a creamy pink/ purple to purple/yellow

O2 Harness

my wife Bedazzled my input shaft

That is…until I whipped out my Bissell

my wife Bedazzled my input shaft

New Member

my wife Bedazzled my input shaft

my wife Bedazzled my input shaft

my wife Bedazzled my input shaft

That is…until I whipped out my Bissell

my wife Bedazzled my input shaft

That is…until I whipped out my Bissell

my wife Bedazzled my input shaft

my wife Bedazzled my input shaft

That is…until I whipped out my Bissell

That is…until I whipped out my Bissell

my wife Bedazzled my input shaft

my wife Bedazzled my input shaft

That is…until I whipped out my Bissell

That is…until I whipped out my Bissell

my wife Bedazzled my input shaft

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