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

Fuel Pump Not Working

  • Thread starter Thread starter Andrew Larsen
  • Start date Start date Apr 12, 2017
A

Andrew Larsen

New Member
Jul 18, 2015
25
0
1
Apr 12, 2017
#1
  • Apr 12, 2017
  • #1
Hello everyone,
A month ago I was having the fuel pump continuously running problem. Turned out to be a bad capacitor on the EEC. I solder the capacitor and was on my way.

I was at a gas station a few weeks ago and my car wouldn't start after I turned it off. I went into the passenger fender and pulled out what I think is the fuel pump relay and a/c wot shut off relay. They were completely soaked in water and look corroded. I blew them off with air at the gas station and put them back in and the car started up.

Yesterday I was leaving work and my car wouldn't start. The fuel pump is not priming when I turn the key. I tried swapping the relay even though they have different numbers on them and it didn't do anything. And I went to the auto part store to try and get a relay but they couldn't find anything like my relays.

I tried jumping the EEC test connector FP port to ground with the ignition on and didn't hear the relay at all. I then swapped my relays again. Now I can hear the FP relay clicking.
But the pump isn't turning on even with the relay clicking...?
Where should I start to look from here?

Thank you guys I appreciate it. The pictures are of what I think is my fp and a/c wot cut off relays
 

Attachments

  • 20170412_100155.webp
    265.6 KB · Views: 260
  • 20170412_100149.webp
    367.9 KB · Views: 242
  • 20170412_100128.webp
    276.8 KB · Views: 249
A

Andrew Larsen

New Member
Jul 18, 2015
25
0
1
Apr 12, 2017
#2
  • Apr 12, 2017
  • #2
Fix it, the relay clicked normally but was still bad.
Got a new universal relay at napa and she fired right up. Mod can delete this post. Thanks
 

General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
27,829
10,509
203
polk county florida
Apr 12, 2017
#3
  • Apr 12, 2017
  • #3
Post will live in infamy, it may help someone in the future.
 
Reactions: Andrew Larsen
You must log in or register to reply here.

Similar threads

Engine Fuel not pumping
  • Creomod
  • Apr 13, 2026
  • Fox 5.0 Mustang Tech
  • 2 3
Replies
43
Views
699
Fox 5.0 Mustang Tech May 3, 2026
Shakerhood
S
Help needed - Cranks, no Start
  • sleeping93coupe
  • Nov 30, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
4
Views
273
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Nov 30, 2025
AeroCoupe
S
1990 foxbody 5.0 fuel system.
  • staceyj
  • Nov 28, 2025
  • Fox 5.0 Mustang Tech
Replies
8
Views
343
Fox 5.0 Mustang Tech Nov 28, 2025
Mustang5L5
New fuel pump relay
  • Scrapla347
  • Nov 3, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
12
Views
770
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Nov 8, 2025
Scrapla347
Electrical Fuel pump relay pin question
  • Shopteach
  • Apr 4, 2025
  • Fox 5.0 Mustang Tech
Replies
1
Views
180
Fox 5.0 Mustang Tech Apr 4, 2025
AeroCoupe
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?