Electrical Neutral Sensing Switch Not Hooked Up... Confused

Cheapskate207

Active Member
Jan 12, 2020
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Cruising the web researching mustang info as I often do and I come across the NSS. I never knew about this sensor and what do you know, it looks EXACTLY whats hanging from under my car. :doh: AND it evidently causes a hanging idle... which I have (slightly). I DO NOT have a code 67 and the car runs great. I am able to dump the codes. I looked under my dash at the clutch pedal and find this mess:
5269BC5F-CF6B-4720-92E2-9FC9D5DCD2FF.jpeg


The splices I circled in red were connected at one time (blue wire) but have now been cut. I read somewhere these went to the starter so that it doesn't start if the clutch is not pressed down. That feature works as it should on my car. I suspect that my car should get a code 67 seeing that the NSS is not plugged into my trans. Of course I can not see what is in that port now without removing the trans. This hackery flares up my OCD and I would like to get it cleaned up and functioning, if it is in fact not functioning correctly. It also runs just fine, the idle just hangs a second between shifts... should I just leave well enough alone? Any info or feedback is appreciated. .
 
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Mustang5L5

i'm familiar with penetration
Mod Dude
Feb 18, 2001
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The clear plug is the NGS which is in parallel with the switch on top of the t5. When either one is closed (clutch in, or T5 in nuetral) it tells the ECU.

4A7280EF-39C4-447D-9BC5-57FA02618EFB.jpeg


Black plug with the red/blue wires is the starter interrupter. Close to start the car.

Clear plug is the NGS. Black on one side, blue on the other.
 

Cheapskate207

Active Member
Jan 12, 2020
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Right on, thank you. That’s very helpful. Idk why the starter interupter is so hacked up. But it works so. I also don’t know why the NGS is not connected. Fortunately the car runs well. Is there a trick to getting at the NGS or does the trans need to come out to service it? Thanks
 

Mustang5L5

i'm familiar with penetration
Mod Dude
Feb 18, 2001
34,051
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Massachusetts
Usually the plug is dangling by the side of the case. See if it is dangling.

You can temo connect the NGS wires under the dash and should help with the hanging idle.
 

Cheapskate207

Active Member
Jan 12, 2020
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Maine
Sorry if I wasn’t clear. Then entire sensor is dangling on the side of the case. Plugged in and all. I’ll try to jump it.. I read another post from years ago when you mentioned installing a fuse to jump it.
 

Mustang5L5

i'm familiar with penetration
Mod Dude
Feb 18, 2001
34,051
10,317
224
Massachusetts
Under the dash. The clear plug in the above pic. Stick a fuse in there and it closes it permanently. It’s a temp fix.