Running ignition wires for turboswap directly to Comp. insteadof using factory wiring

KenneBell

New Member

Apr 14, 2005

158

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San Jose California

Dec 6, 2005

#1

• Dec 6, 2005

• #1

The engine just will not run with the spout connector in and misses with it out, and I am getting an erratic PIP code in constant memory. New distributor, New Coil, New TFI, New ECM so wiring has got to be wrong. I am planning on running wires directly from the TFI to the computer, the only wire that goes to the TFI that does not go to the computer is the red/lt grn wire. Where should I hook this one too? I know it gets spliced into and run to the positive side of the coil but where else should it go? Thanks Stinger!

 

Dr_EluSivE

Founding Member

Apr 24, 2002

2,155

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56

Central Illinois

Dec 6, 2005

#2

• Dec 6, 2005

• #2

honestly... Go to the junkyard and get a Engine harness from a mustang, Repin it, and try that, running wires directly to the computer is going to be a royal pain, and shouldnt be needed, Something is wrong with your harness, or the way is pinned.


Dr.

 

KenneBell

New Member

Apr 14, 2005

158

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San Jose California

Dec 6, 2005

#3

• Dec 6, 2005

• #3

I have been to every pick N pull within 60 miles of my house and not 1 has a 91-93 4cyl mustang, so I can't get another harness, also running the wires to the computer is merely temporary to diagnose if my harness is bad.

 

Stinger

Founding Member

Jul 7, 2001

7,754

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Basehor (Kansas City), KS

Dec 6, 2005

#4

• Dec 6, 2005

• #4

If you want to know if the harness is bad, go to gt350r's site and download the pinout voltages paper...then check all of yours...

 

KenneBell

New Member

Apr 14, 2005

158

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San Jose California

Dec 7, 2005

#5

• Dec 7, 2005

• #5

None of his links work, grrrr. Where else does that red/lt grn wire go besides the pos. side of coil? Thanks

 

stackz

Founding Member

Jun 13, 2001

1,352

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58

james island, sc

Dec 7, 2005

#6

• Dec 7, 2005

• #6

have you looked on ebay for a harness?

 

KenneBell

New Member

Apr 14, 2005

158

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0

San Jose California

Dec 7, 2005

#7

• Dec 7, 2005

• #7

No luck on ebay either, only 2.3 harness on there is for an 89 and I need one from a 91 -93.

 

S

SVOconvLX85

Member

Mar 16, 2004

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Vegas, for a while...

Dec 8, 2005

#8

• Dec 8, 2005

• #8

Let me see if I can get one from a junkyard around here. If so, I'll let you know. Sound good? There are all kinds of 91-93's around here.

 

KenneBell

New Member

Apr 14, 2005

158

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San Jose California

Dec 8, 2005

#9

• Dec 8, 2005

• #9

That would be awesome, could you also get the IRCM module labeled N if they have one? I will pay you whatever you want Thanks so much. Let me know what you find.

 

Stinger

Founding Member

Jul 7, 2001

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Basehor (Kansas City), KS

Dec 9, 2005

#10

• Dec 9, 2005

• #10

The red/grn wire goes to pretty much every sensor under the hood...it's the signal return aka sensor ground system.

 

KenneBell

New Member

Apr 14, 2005

158

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0

San Jose California

Dec 10, 2005

#11

• Dec 10, 2005

• #11

Just a question but if that wire red/grn is the sensor ground why does it hook to the positive side of the coil and there is no red/grn wire going to the computer?

 

N

nicklats

New Member

Nov 6, 2005

63

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0

Dec 13, 2005

#12

• Dec 13, 2005

• #12

Stinger said:

The red/grn wire goes to pretty much every sensor under the hood...it's the signal return aka sensor ground system.

Click to expand...

what could cause a sensor (or the coil) not to be grounded once the key is in the cranking position??

 

Stinger

Founding Member

Jul 7, 2001

7,754

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Basehor (Kansas City), KS

Dec 13, 2005

#13

• Dec 13, 2005

• #13

Honestly, I'd have to dig out the diagrams again and check. I'll assume that the one that goes to the coil isn't one of the sig returns (as there are like 20 sig return wires). As for why they don't run to the ECU...they do...they all terminate into one wire "block" in the harness, then a single wire goes to the ECU.

nicklats: Most likely it's because the above mentioned wires are not all tied together which is causing an open ground for the sensors.

 

Asha'man

Founding Member

Feb 5, 2002

1,909

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Denver

Dec 14, 2005

#14

• Dec 14, 2005

• #14

edit: double-tap, stangnet is stupid.

 

Asha'man

Founding Member

Feb 5, 2002

1,909

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Denver

Dec 14, 2005

#15

• Dec 14, 2005

• #15

I twisted/soldered all the red/green wires together when I removed the coil pack plugs and wiring. No ignition problems yet.

I have like three DP/DIS ignition harnesses lying around; I was collecting them for a while in case I screwed something up on my main one. PM me if you want one.

Brian