hard start
Thread Starter
|
New User
Joined: Feb 2013
Posts: 22
Likes: 0
hard start
i went with stage one injectors,all new glow plugs, now truck is hard to start when cold 20 degrees or less, and when it does loobs really bad. i know its a california truck up here in northern mn. but i didnt have this much trouble even with a bad glow plug code. and thoughts on this
Senior User
Joined: Mar 2008
Posts: 337
Likes: 1
Sounds like one of your under valve cover harnesses may be loose. Unplug the connectors, meter the pins for resistance. Each of the front two pins and rear two pins should show about 2 ohms from pin to ground. The very middle pin is the ground for the injectors. Meter the other four pins to this one; you should see about 3 ohms for each injector. If you find any open circuits, pull that valve cover and check the harness connection underneath. And do the $.50 mod.
Thread Starter
|
New User
Joined: Feb 2013
Posts: 22
Likes: 0
NO its not - 02
Thread Starter
|
New User
Joined: Feb 2013
Posts: 22
Likes: 0
Sounds like one of your under valve cover harnesses may be loose. Unplug the connectors, meter the pins for resistance. Each of the front two pins and rear two pins should show about 2 ohms from pin to ground. The very middle pin is the ground for the injectors. Meter the other four pins to this one; you should see about 3 ohms for each injector. If you find any open circuits, pull that valve cover and check the harness connection underneath. And do the $.50 mod.
Thread Starter
|
New User
Joined: Feb 2013
Posts: 22
Likes: 0
Sounds like one of your under valve cover harnesses may be loose. Unplug the connectors, meter the pins for resistance. Each of the front two pins and rear two pins should show about 2 ohms from pin to ground. The very middle pin is the ground for the injectors. Meter the other four pins to this one; you should see about 3 ohms for each injector. If you find any open circuits, pull that valve cover and check the harness connection underneath. And do the $.50 mod.
Trending Topics
Logistics Pro
Joined: Oct 2011
Posts: 3,953
Likes: 120
From: Mcdonough, GA
Using a Quarter with some shaved off one side to hold the UVCH connector clip in place so they won't back out. One quarter each side= $.50
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Senior User
Joined: Mar 2008
Posts: 337
Likes: 1
Paul's pic shows it. The factory harnesses will back out and lose connection over time. Countless 7.3 owners have experienced this, and your symptoms follow that problem. Ford has a "upgraded harness" fix available, or you can use a grinder and fit a quarter in each harness (for a grand total of $.50), which physically keeps them from coming apart.
Your issue could be from something else, but if you follow my suggestion and resistance-check the pins at the valve cover, you can verify that quickly and easily.
Your issue could be from something else, but if you follow my suggestion and resistance-check the pins at the valve cover, you can verify that quickly and easily.
Thread
Thread Starter
Forum
Replies
Last Post
cabloom300
1999 - 2003 7.3L Power Stroke Diesel
12
Jan 12, 2018 08:44 AM
flavo
1999 - 2003 7.3L Power Stroke Diesel
7
Nov 3, 2013 08:45 PM