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Mystery wire

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  #1  
Old 01-20-2018, 05:41 AM
Texasknowhow
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Mystery wire

Guys, baselining a 1997 F250 w the 7.3. Found a small wire with a 90 deg cap on it near the fuel filter. Can anyone identify what itís for?

Iím uploading a quick video of it here:
https://www.dropbox.com/s/dxlmogb6lt...%20AM.mov?dl=0

Thanks in advance! Clay
 
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Old 01-20-2018, 07:48 AM
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Fuel filter restriction switch, (ford calls it a vacuum switch) yours has been removed, it is a leak point and quite expensive for what it is.
also your boot from the driver side valve cover to the turbo (orange boot) is a recalled boot and updated with a black one that doesn't tear as easy foding yout turbo.
 
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Old 01-20-2018, 07:53 AM
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that pic is one of my '97's it hasn't started leaking "yet" that is why the sensor is still there. when it starts leaking sensor will be removed and an 1/8" pipe plug installed. I heat shrink the end of the wire and tie it back to the harness when I do that.
 
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Old 01-21-2018, 01:12 AM
Texasknowhow
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Thanks for that answer. Makes total sense now. So should I ask for the updated turbo hose at a Ford Dealership? Mine is torn under the hose clamp on the turbo end. As I detail this new (to us) truck I will probably have additional questions. Another loose wire was found wrapped around the trans x-member - it fit a plug up high on the Driverís side of the transmission. Iím thinking either reverse light switch or Neutral Safety Switch...??? I hooked it back up, but wonít probably fire it up until sometime tomorrow to see if I have something new working or not haha.

Thanks again.
 
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Old 01-21-2018, 07:45 AM
Shawn MacAnanny
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I had the same issue with my orange hose. I got the one Riff Raff makes. I had a terrible time getting it to fit on but its high quality.

Riffraff Diesel 94-97 Turbo Intake Boot - Ford 7.3L
 
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Old 01-21-2018, 11:09 PM
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Automatic or manual transmission? How many terminals on that second connector you found?
 
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Old 01-22-2018, 03:48 AM
Texasknowhow
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Itís the manual 5 speed. Two conductors on the wire/connector.
 
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Old 01-22-2018, 05:44 AM
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That's the reverse light switch. There's no neutral safety switch.
 
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Old 01-22-2018, 08:40 AM
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Okay cool. Iíll need that to get my inspection for sure!
 
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Old 01-22-2018, 09:15 AM
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Originally Posted by Texasknowhow View Post
Another loose wire was found wrapped around the trans x-member - it fit a plug up high on the Driverís side of the transmission. Iím thinking either reverse light switch or Neutral Safety Switch...???
If it fits that plug, and one of the wires is purple and the other is black, they are for the reverse lights. Go with the Riff Raff turbo hose, the updated one from ford comes as a kit that includes the metal piece that the crankcase breather tube hooks into that you don't really need to replace, but the new turbo hose won't fit the old metal tube. Plus it is a lot cheaper than the Ford kit.
 
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Old 01-22-2018, 09:21 AM
Texasknowhow
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Thanks Farmert, I believe that is the wire. Also Iíll look into the RiffRaff hose. Thanks man.
 
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