pcm wires eaten by rodent - Diesel Forum - TheDieselStop.com
'99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

 1Likes
  • 1 Post By klhansen
 
LinkBack Thread Tools Display Modes
post #1 of 8 (permalink) Old 07-13-2019, 03:31 PM Thread Starter
Senior Member
 
Join Date: Nov 2016
Posts: 108
My Photos: (0)
Feedback Score: 0 reviews
pcm wires eaten by rodent

My trucks fine but during an inspection I found that a rodent ate threw three wires which go to the PCM. Im having a hard time matching these up to what I find for wire color charts. Can anyone tell me what these are for and how important it is that I repair? Its going to be a really tough job to do.

attached is a photo but as far as I can tell they are one is as I shot it and one is with some saturation added.
violet/pink
Red/Green
Green/Red (EDIT: Green/Yellow)

Note: Im assuming its the PCM.. its the connection that is attached to the firewall that has a single 10mm bolt. I think that is where I installed my Hydra tuner

My f250 is a 99 manufactured in 7/99
Attached Thumbnails
Click image for larger version

Name:	pcm wires.PNG
Views:	22
Size:	1,015.9 KB
ID:	127474  

Click image for larger version

Name:	pcm wires saturated.PNG
Views:	20
Size:	1,000.4 KB
ID:	127476  


early 99, cone intake, stock 3.5" exhaust, muffler deleted. Edge Evolution CS

Last edited by Barchetta; 07-14-2019 at 08:13 AM.
Barchetta is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 07-14-2019, 03:05 AM
Lifetime Supporting Member
 
klhansen's Avatar
 
Join Date: Jan 2003
Location: Eagle River, Alaska
Posts: 24,870
My Photos: (180)
Feedback Score: 0 reviews
Most of the connectors have a single 10mm bolt. The PCM connector is the one that's rectangular with the long side vertical.


The attached PCM pinout should help you figure it out.
Attached Files
File Type: pdf PCM pinout.pdf (1.07 MB, 22 views)
woodnthings8 likes this.

First truck -- 1929 Model A Ford pickup, restored from ground up. Wish I still had it!
'99.5 F250 PSD Supercab LB 4x4, ZF-6 w/SB Con OFE, 3.73LS, Boost & pyro gauges, Swamps S175/146 injectors, DP 80 HP Econo PCM (classic version
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
), AIS,
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
regulated return,
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
klhansen is offline  
post #3 of 8 (permalink) Old 07-14-2019, 08:34 AM Thread Starter
Senior Member
 
Join Date: Nov 2016
Posts: 108
My Photos: (0)
Feedback Score: 0 reviews
Assuming this chart is correct for early 99..

Looks like it chewed through:

Glow plug controller output

Brake pedal position switch

Digital transmission range sensor

Guess I will research these and see why my truck SEEMS to be working normally. According to this chart it doesnt say my e99 doesnt use the Glow plug controller output.

Edit: I dont see how my truck could be shifiting correctly.

If anyone can clarify these Id appreciate it before I spend hours trying to splice these. 2 of these have 1" of cable hanging out the pcm connector.

early 99, cone intake, stock 3.5" exhaust, muffler deleted. Edge Evolution CS

Last edited by Barchetta; 07-14-2019 at 08:38 AM.
Barchetta is offline  
Sponsored Links
Advertisement
 
post #4 of 8 (permalink) Old 07-14-2019, 12:36 PM Thread Starter
Senior Member
 
Join Date: Nov 2016
Posts: 108
My Photos: (0)
Feedback Score: 0 reviews
Ran a scan.. glow plug and trans error. However the brake lights work.

This is gonna be a hell of a job. Bought some cool splicers that have solder in the middle.. low temp solder you heat with hot air. Hope they dont melt from heat in engine bay. Luckily I have a surface component hot air solder tool.

Going to buy anti rodent tape.. not gonna risk this happening again.

early 99, cone intake, stock 3.5" exhaust, muffler deleted. Edge Evolution CS

Last edited by Barchetta; 07-14-2019 at 12:38 PM.
Barchetta is offline  
post #5 of 8 (permalink) Old 07-14-2019, 01:39 PM
Lifetime Supporting Member
Lifetime Supporting Member
 
bugman's Avatar
 
Join Date: May 2002
Location: Gypsum, Co
Posts: 8,468
My Photos: (12)
Feedback Score: 1 reviews
Get a old pair of your wife's nylons and put some moth balls into them and lay them around the harness.

96 F250 PS XLT 4X4 long box, 5sp,4.10, manual hubs,pyro+boost guages, Dark Toumaline, add a leaf, Dale's TYMAR, and HX hose, downpipe, coolant filter, Luk clutch
bugman is offline  
post #6 of 8 (permalink) Old 07-14-2019, 05:47 PM Thread Starter
Senior Member
 
Join Date: Nov 2016
Posts: 108
My Photos: (0)
Feedback Score: 0 reviews
Well nearly 5 hours later and I was able to use the hot air solder splicers to get the job done. It was a real pain. Ran a scan and glow plug error is gone. There are 3 brake sensors and all three work including pressure. I dont know if the transmission one works because I cant move my truck at the moment.

While I was out there I saw a squirrel running around with a baby in its mouth. I was trying to feel sympathetic but failed to do so.

early 99, cone intake, stock 3.5" exhaust, muffler deleted. Edge Evolution CS
Barchetta is offline  
post #7 of 8 (permalink) Old 07-21-2019, 08:37 PM
Lifetime Supporting Member
Lifetime Supporting Member
 
bigb's Avatar
 
Join Date: Nov 2003
Location: Arizona
Posts: 1,332
My Photos: (0)
Feedback Score: 0 reviews
Quote:
Originally Posted by Barchetta View Post
Well nearly 5 hours later and I was able to use the hot air solder splicers to get the job done. It was a real pain. Ran a scan and glow plug error is gone. There are 3 brake sensors and all three work including pressure. I dont know if the transmission one works because I cant move my truck at the moment.

While I was out there I saw a squirrel running around with a baby in its mouth. I was trying to feel sympathetic but failed to do so.
Must be some big squirrels there. Shame on whoever left that baby unattended.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Brian, Tucson, Arizona
02 F350 4x4 CREW 7.3 170K, BFG Rugged Terrain 285s, AIS, Isspro pyro, boost & tranny temp pillar pod, Dipricol coolant temp, ELC, Isspro EV-2 Fuel Pressure & HPOP, Dieselsite boots, coolant & tranny filters & 203* Stat, 6.0 Tranny Cooler, ITP pre pump tank mod, Bellowed Up Pipes, Riffraff Frx, netbook mount with AE, GPR LED, Stancor, Red Head steering gear, Battery Tender & 2 Marincos.
bigb is offline  
post #8 of 8 (permalink) Old 07-22-2019, 08:26 AM
Senior Member
 
bobofthenorth's Avatar
 
Join Date: Mar 2001
Location: Buchanan, SK
Posts: 316
My Photos: (0)
Feedback Score: 0 reviews
Quote:
Originally Posted by Barchetta View Post
While I was out there I saw a squirrel running around with a baby in its mouth. I was trying to feel sympathetic but failed to do so.

A squirrel is just a rat with a better PR agent. Hate 'em all.

2006 F250 6.0 4x4
bobofthenorth is offline  
Sponsored Links
Advertisement
 
Reply

  Diesel Forum - TheDieselStop.com > 1999-2007 Ford Super Duties > '99 & up 7.3L Power Stroke Engine and Drivetrain

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Diesel Forum - TheDieselStop.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome