• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

1993 5.0 injector harness shorted

  • Thread starter Thread starter brian84
  • Start date Start date May 20, 2021
B

brian84

Member
May 20, 2021
13
3
13
new york
May 20, 2021
#1
  • May 20, 2021
  • #1
Hi all, new to the site and computers. Please bear with.
1993 E150 5.0. Has fuel, has spark, has injector pulse depending how I check.
This is a wiring issue. Distributor is disconnected, engine harness is disconnected and unplugged. It is not PCM>
Today I had power at both sides of an injector. The red wired 12V+ and tan wire 12V+ untill I unplugged all 8 injectors.
Tomorrow I am going to pull engine harness and unwrap. IMO there should be 8 ground wires, 1 for each injector. They have to be pinched / melted somewhere.
My question is where is the common spot?
I may just go in and do a valve job while I'm in there but it needs a rear main so prob going to get in and freshen rods/ mains, rings. However I would like to resolve the electrical issue first.
I was rather discouraged a few days ago. I forgot how to work on this stuff......as simple as it was/is. Also haven't seen my noid lights in 20+ years.
Thanks in advance.
 
You must log in or register to reply here.

Similar threads

C
Electrical HELP! 1989 5.0 Stick, Voltage Bleed onto Ignition Trigger wire
  • ChickenDeluxe
  • May 14, 2026
  • Fox 5.0 Mustang Tech
Replies
7
Views
200
Fox 5.0 Mustang Tech May 24, 2026
ChickenDeluxe
C
8
Electrical Crank-no start ... no spark ... no injector pulse, was it something I did? (redux)
  • 85gtCOBRA
  • Oct 28, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
532
Fox 5.0 Mustang Tech Oct 29, 2025
85gtCOBRA
8
M
Misfire
  • Mike3
  • May 30, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
1
Views
77
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 30, 2026
Mike3
M
B
Fuel 1990 mustang gt 5.0 no ground signal to fire injectors
  • brandyn200
  • Sep 5, 2025
  • Fox 5.0 Mustang Tech
Replies
6
Views
248
Fox 5.0 Mustang Tech Sep 6, 2025
Noobz347
S
Fuel ‘88 GT Runs Rich Cold — Fixes Itself When I Unplug Sensors (ECT, MAF, O2, etc.)
  • Sufarry
  • Nov 6, 2025
  • Fox 5.0 Mustang Tech
Replies
12
Views
778
Fox 5.0 Mustang Tech Nov 9, 2025
Mustang5L5
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?