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

HELP!!! Car turns over but wont start after replacing fuel pump!!!

  • Thread starter Thread starter afast93stang
  • Start date Start date Feb 17, 2004

afast93stang

Founding Member
Jan 6, 2002
1,407
4
39
North Texas
Feb 17, 2004
#1
  • Feb 17, 2004
  • #1
Last time I drove the stang was Friday night, there were not any noticable problems of any kind. The reason I didnt drive it Sat or Sun is because we got 3 inches of snow. Monday morning I come out to go to class and it wont start.

I usually prime the engine a few times espically since its been pretty cold lately. When I went to prime it I didnt hear the fuel pump whine like I have always heard, but I still tried to start it not really thinking much of it. It didnt start and thought it was the fuel pump. Later that day I go to the parts store and get a new one and I just finished putting it in.

I have the same problem, no fuel pump whine.

I have checked and rechecked the wires on the pump and looked at my fuses and checked the connections to the fuel pump relays nothing is loose. Like I said, I had no indication of anything going out when I drove it on Friday.

What do I do or check next?
 

gaslight

Founding Member
Jul 12, 2000
3,364
16
99
Maine
Feb 17, 2004
#2
  • Feb 17, 2004
  • #2
first make sure you pushed the reset button on the pump relay.
 

afast93stang

Founding Member
Jan 6, 2002
1,407
4
39
North Texas
Feb 17, 2004
#3
  • Feb 17, 2004
  • #3
Already did that too, could one of the relays gone bad?
 

Smokedawg

Founding Member
Jul 6, 2001
2,260
1
48
Feb 17, 2004
#4
  • Feb 17, 2004
  • #4
To figure out if its getting either spark or fuel and which one it is lacking do the following:

Take off the hose by the MAF and shoot a little ether in the tube, then have someone try to start the car. If it fires then shuts right back off you know you are getting spark but no fuel, if it never trys to fire, shoot a little more ether in and try it again. If it never trys to fire, you are not getting any spark so its something between the coil and distributor..

Good luck

-Smoke
 

afast93stang

Founding Member
Jan 6, 2002
1,407
4
39
North Texas
Feb 17, 2004
#5
  • Feb 17, 2004
  • #5
Its the relays, I pulled them off and switched them, and cleaned the connections with small steel brush this time it started... And dont go to Autozone for replacement ones, the will give you the wrong ones.
 
You must log in or register to reply here.

Similar threads

B
Electrical Why does my fox body keep frying eecs
  • brandyn200
  • Jun 20, 2026
  • Fox 5.0 Mustang Tech
Replies
8
Views
259
Fox 5.0 Mustang Tech Jun 25, 2026
AeroCoupe
A
1987 5.0 speed density Foxbody crank no start
  • Alan2204
  • May 23, 2026
  • Fox 5.0 Mustang Tech
Replies
10
Views
309
Fox 5.0 Mustang Tech May 30, 2026
Mcmahst
F
2004 Mustang GT – Fuel Pump Not Priming
  • Fayio
  • Apr 22, 2026
  • SN95 4.6L Mustang Tech
Replies
7
Views
308
SN95 4.6L Mustang Tech Apr 27, 2026
n0v8or
N
Fox Fuel Pump Issues After Replacement/Upgrade
  • Ryu
  • Jun 23, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
23
Views
572
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jul 5, 2026
Ryu
B
Engine Another no start after washing engine bay
  • bruno
  • Apr 26, 2026
  • Fox 5.0 Mustang Tech
  • 2
Replies
24
Views
716
Fox 5.0 Mustang Tech May 7, 2026
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?