Injector Circuit Low
Thread Starter
|
Freshman User
Joined: Jan 2008
Posts: 33
Likes: 0
From: Dartmouh, Nova Scotia
Injector Circuit Low
Hi guys, I'm normally on the 99-03 PSD forum, but have been working on a 96 PSD at work. I've pulled 2 codes from the computer. Injector Circuit 4 and 8 Low. From what I can gather from my search of the forum, it would be the under valve cover harness. So far I've replaced that and the valve cover gasket (haven't tried to start it as of yet) I'm still waiting fot pigtail repair ends for the engine harness. When I pulled the front connector on the drivers side head, closest to the firewall, I noticed the glow plug pins were melted quite badly, so when I get my repair ends I'll try it. But as for now, is there anything else I should be looking at/for?
Thanks in advance
Thanks in advance
Post Fiend
Joined: Oct 2003
Posts: 5,903
Likes: 1
From: MICHIGAN
Tep you likely found your trouble. The harnesses are known to melt. I would replace everthing that look s suspect. Be sure to check the harness under the valve cover for rubbing. I would leave the valve covers off for the initial start up. Look for oil pizzing out of the small hole on each injector. It's a quick way of determining if all the injectors are firing. Good luck...let us know how it turns out.
Thread Starter
|
Freshman User
Joined: Jan 2008
Posts: 33
Likes: 0
From: Dartmouh, Nova Scotia
So.. I got to work on the truck for a while today. Put the harness plugs on, and tried firing it up. It worked a little better, but only marginally. It got rid of #4 cyl circuit low code. But still not good. I'm beginnig to lean towards the IDM, since I checked all the resistances in the injectors using an old harness plug, through the uvc harness, and from the IDM harness plug to the uvc plugs. Does it sound possible to have an IDM that won't fire on only one cylinder? Starting to drive me a little screwy, doesn't help I'm also trying to get broken exhaust manifold studs out of a C-12 cat engine while working on this truck too. Nerve wracking... Anyway.. Thanks guys
Hotshot
Joined: Aug 2006
Posts: 10,764
Likes: 39
You're alway's one step ahead of me ,,,
But I have all the beans .....
I wasn't sure it would show up on a scan...
Thinking solonoid .....
Love the avi....
But I have all the beans .....
I wasn't sure it would show up on a scan...
Thinking solonoid .....
Love the avi....
Trending Topics
Thread Starter
|
Freshman User
Joined: Jan 2008
Posts: 33
Likes: 0
From: Dartmouh, Nova Scotia
Ok.. so the numbers on the injectors seemed to be lowering as the engine was cooling down(tested them after running engine for a while) All 8 injectors measured the same. Should I have measured them cold? Is there a magic number? As for loose poppet screws I have no idea. Are they the torx head screws on the tops?? What are the torque specs? Sorry for all the questions but I'm grabbing for all the straws I can on my way. Thanks for all the help
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Post Fiend
Joined: Oct 2003
Posts: 5,903
Likes: 1
From: MICHIGAN
If you decide to do that be aware there is 115V DC on those wires.
Thread
Thread Starter
Forum
Replies
Last Post
Brett W 55 Ford
1999 - 2003 7.3L Power Stroke Diesel
71
Dec 21, 2010 09:00 PM
1BADRIDE
Excursion - King of SUVs
10
Oct 2, 2010 11:26 AM
fast96powerstroke
1999 - 2003 7.3L Power Stroke Diesel
11
Jun 28, 2008 06:27 PM
