HELP PLZ
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Trailering
Joined: Apr 2021
Posts: 21
Likes: 0
Be careful with that, those look a little "Melded" to me, actually, That whole bundle right there looks toasty, don't pull anything apart until you're ready to start patching right away...… I suggest going and getting a bottle of liquid tape before you separate any of those wires...…
and a roll of 3M 33 at the ready also for that matter.
and a roll of 3M 33 at the ready also for that matter.
Laughing Gas
Joined: Aug 2014
Posts: 1,020
Likes: 9
From: Washington State
Another Fine 3M product...… it's asphalt coated cloth tape, used on almost all wire looms made since forever ago, but it does not work again after removal. hence the 33 Black electricians tape. And the section that feels 'Pliable" at that spot probably won't be 6" down from there. We're talking about 20+ some odd years of Heat cycles, It will literally come apart in your hands... FYI
Logistics Pro
Joined: Oct 2011
Posts: 3,953
Likes: 120
From: Mcdonough, GA
Again im not at a computer but thought that one wire was ground, one 5 volt, and one feedback to the pcm? Might want to check continuity to the 42 pin connector before tearing apart
that material may be water proof heat shrink
that material may be water proof heat shrink
Laughing Gas
Joined: Aug 2014
Posts: 1,020
Likes: 9
From: Washington State
Yeah, What he said, I'm still at work so no access to my Bible....
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Trailering
Joined: Apr 2021
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I honestly dont know if I still have the old icp. I moved and had the truck towed 2.5hrs. To my new home. I replaced the icp at the old house. Truck has never run except for about 30 sec. The other day with the new icp.
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Trailering
Joined: Apr 2021
Posts: 21
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You think that would be why the icp pigtail is not reading.like its supposed to? Did yo see the pics I posted?
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It's a Van Gogh
Joined: Feb 2010
Posts: 7,813
Likes: 1,335
From: Elk Grove, CA
I think the ICP and EOT wire colors match the wiring diagram, but since they are spliced into the harness further back you'd be wise to cut back into the harness and make sure they were spliced onto the correct wires. Hit the connectors with some contact cleaner or brake clean, skank there does not help.
Here's a decent diagram from the Tech Folder to help with the wire weirdness. What it calls the Injector Control Sensor is really the Injector Control Regulator, but whatev.
Well backburner the above for now; I'd start by monitoring sensors (not AE, obsolete and expensive). Watching the numbers will tell you if those sensors are working. Need Forscan, Torque Pro or similar app and a bluetooth OBD2 dongle. Lots out there find advice on FTE.
For the 42 pin harness inspect the underside where the wires can rub on the valve cover.
Here's a decent diagram from the Tech Folder to help with the wire weirdness. What it calls the Injector Control Sensor is really the Injector Control Regulator, but whatev.
Well backburner the above for now; I'd start by monitoring sensors (not AE, obsolete and expensive). Watching the numbers will tell you if those sensors are working. Need Forscan, Torque Pro or similar app and a bluetooth OBD2 dongle. Lots out there find advice on FTE.
For the 42 pin harness inspect the underside where the wires can rub on the valve cover.
FTE Leadership Emeritus
Joined: May 2014
Posts: 27,354
Likes: 5,946
From: Lake Hartwell, GA
Below is some information on FORScan taken from the 7.3L PSD Tech Folder that should get you pointed in the right direction. The Q&A written by BWST and the instructions for your preferred device are where I would suggest you start. TorquePro is pretty and works fairly well, but FORScan or FORScan Lite works every time and is much more powerful as a diagnostic tool than TorquePro. At least in my opinion.
FORScan
FORScan
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Trailering
Joined: Apr 2021
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I had a few min. Today and checked PCM and dont have a chip. Although it looks like it has been chipped before. I still dont have 12v to the icp pigtail. I checked the 42 pin Male side today for 12v on the icp pin and dont have voltage there either. How do I check for continuity throughout the entire 42pin connector?
FTE Leadership Emeritus
Joined: May 2014
Posts: 27,354
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From: Lake Hartwell, GA
I am not at my laptop right now, so I cannot verify this, but isn't the ICP sensor in the 5v reference circuit? If so, you should not expect to see 12v at the sensor connector/pigtail.
As for testing the 42 pin connector, that depends on which direction you want to test. Toward the engine harness or toward the IDM/PCM. FYI, back probing is a preferred method especially when checking male pins in a connector.
As for testing the 42 pin connector, that depends on which direction you want to test. Toward the engine harness or toward the IDM/PCM. FYI, back probing is a preferred method especially when checking male pins in a connector.
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Trailering
Joined: Apr 2021
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I am not at my laptop right now, so I cannot verify this, but isn't the ICP sensor in the 5v reference circuit? If so, you should not expect to see 12v at the sensor connector/pigtail.
As for testing the 42 pin connector, that depends on which direction you want to test. Toward the engine harness or toward the IDM/PCM. FYI, back probing is a preferred method especially when checking male pins in a connector.
As for testing the 42 pin connector, that depends on which direction you want to test. Toward the engine harness or toward the IDM/PCM. FYI, back probing is a preferred method especially when checking male pins in a connector.
FTE Chapter Leader
Joined: Jan 2005
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From: Henderson, NV
I found this in the Tech Folder. The ICP Sensor uses the 5V VRef. The Tech Folder also contains ICP Sensor Pinpoint Tests which answers many of your questions.
Last edited by FordTruckNoob; Apr 23, 2021 at 09:40 AM.
FTE Leadership Emeritus
Joined: May 2014
Posts: 27,354
Likes: 5,946
From: Lake Hartwell, GA
Perhaps, but that is why I wrote that I was not sure and would need to check when I had access to the laptop. Thanks to FordTruckNoob, you should have all of the answers to your questions available to you now.
Keep us updated.
Keep us updated.
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