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

fuel pressure Question

  • Thread starter Thread starter bertman
  • Start date Start date Oct 18, 2006

bertman

Member
Oct 30, 2004
55
0
7
Portsmouth Va
Oct 18, 2006
#1
  • Oct 18, 2006
  • #1
My car 87 stang. When I shut my car off my fuel pressure drops. When is sits for a few hours it dropsdown very low. As soon as I turn the ignition on the pressure comes back up and the car starts fine. Is the fuel pressure supposed to drop a lot or what. If its not supposed to can someone help me to figure out the issue. Fuel pump or what.:SNSign:
 

bradranger

Member
Dec 30, 2003
50
0
17
Hollywood,Maryland
Oct 18, 2006
#2
  • Oct 18, 2006
  • #2
Its correct!
 

DMAN302

My mom says thanks for the pearl necklace.
Nov 8, 2003
2,120
2
59
windsor, Canada
Oct 18, 2006
#3
  • Oct 18, 2006
  • #3
Pressure will fall off slowly, some aftermarket pumps and regulators will affect the rate, but the pressure will fall stock or not.
 

Flavadave4

Active Member
Nov 28, 2003
1,044
21
49
Utica, NY
Oct 18, 2006
#4
  • Oct 18, 2006
  • #4
sounds like its doing what it should!
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Oct 18, 2006
#5
  • Oct 18, 2006
  • #5
Agreed. You don't need to have the fuel lines pressurized for no reason (when the car is off for hours).

Good luck.
 
You must log in or register to reply here.

Similar threads

D
Fuel Erratic Fuel Pressure 1985 GT
  • DienstXIV
  • Jan 14, 2026
  • Fox 5.0 Mustang Tech
Replies
16
Views
706
Fox 5.0 Mustang Tech Jan 16, 2026
AeroCoupe
I
1994 Cobra - Fuel Pressure Drops Revving at Idle
  • IconicSilverGT500
  • Apr 11, 2026
  • 1994 - 1995 Specific Tech
Replies
16
Views
461
1994 - 1995 Specific Tech Apr 24, 2026
Mcmahst
C
03 Cobra Low Fuel Pressure
  • CTsnake_03
  • Mar 17, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
5
Views
274
1996 - 2004 SN95 Mustang -General/Talk- Mar 24, 2026
CTsnake_03
C
J
Fuel Fuel Pressure Issue
  • justadude07
  • May 12, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
415
Fox 5.0 Mustang Tech May 12, 2025
justadude07
J
B
'03 GT Fuel Pump/Pressure/Delivery Issue
  • Brodach
  • Oct 21, 2025
  • SN95 4.6L Mustang Tech
Replies
8
Views
926
SN95 4.6L Mustang Tech Oct 31, 2025
gkomo
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?