• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Fuel Tank Airlock Issue.

  • Thread starter Thread starter Lex
  • Start date Start date May 5, 2014

Lex

Founding Member
Mar 2, 2004
248
0
16
Halifax NS. Canada
May 5, 2014
#1
  • May 5, 2014
  • #1
A few months back. I started having issues with airlock from my fuel tank. When I go to the pump gas, I get about $4 worth of fuel before it clicks (stops) and I can hear air trying to escape. Takes like 5 minutes to put in $20.00 of fuel. I replaced the Filler Tube and Vapor Canister and still has air lock. On top of it. I can tell the car struggles for fuel because once a while (very sporadic every couple days) the car will "hickup" on the highway. it will do it for a while then be fine. Could there be lines plugged? If you have any ideas, let me know

Oh and I get this error on diagnostics

P1131 Lack Of H02S11 = A HEGO sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.
 

wmburns

SN Certified Technician
Aug 14, 2009
5,892
514
204
Houston Texas
May 5, 2014
#2
  • May 5, 2014
  • #2
I have also encounter a similar issue and found the cause to be a clogged charcoal canister. Since you have replaced yours, it seems unlike to be the cause.

Suggest checking the Charcoal canister vent solenoid. The CV vent solenoid is attached almost directly to the charcoal canister. The vent has a mess screen that points to the car's rear. What sometimes happens is insects will make there home in the vent thus blocking it.
 
You must log in or register to reply here.

Similar threads

H
Fuel starvation issues, 91 EFI to carb swap. Car dying after 1-3 gallons used. EFI tank, electric fuel pump, bypass regulator. Dual fed carb
  • hassler
  • Oct 11, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
8
Views
750
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Oct 12, 2025
nickyb
M
01 mustang 3.8 fuel pressure issue
  • Mhaley2006
  • May 29, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
111
1996 - 2004 SN95 Mustang -General/Talk- May 29, 2026
Mhaley2006
M
Fox Fuel Pump Issues After Replacement/Upgrade
  • Ryu
  • Jun 23, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
23
Views
522
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jul 5, 2026
Ryu
B
'03 GT Fuel Pump/Pressure/Delivery Issue
  • Brodach
  • Oct 21, 2025
  • SN95 4.6L Mustang Tech
Replies
8
Views
876
SN95 4.6L Mustang Tech Oct 31, 2025
gkomo
L
1997 V6 Starting issue
  • leanzik04
  • Mar 20, 2026
  • SN95 V6 Mustang Tech
Replies
3
Views
236
SN95 V6 Mustang Tech Mar 20, 2026
Noobz347
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L 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?