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

vaccume to low

  • Thread starter Thread starter evilwater
  • Start date Start date Aug 18, 2006

evilwater

New Member
Jul 30, 2003
70
0
0
windom MN
Aug 18, 2006
#1
  • Aug 18, 2006
  • #1
i just put on the trick flow kit h/c/i and the motor was not running right so i replaces the o2 sencers and it stopped the surging but the motor still seems slugish and has no power so i checked the vaccume. its running at about 10.5 to 11. i called trick flow and they sayed that it sould not run any lower then 12. well i have checked all the vaccume lines and cant find any vaccume leeks. anyone have any ideas?
 

backfocus

Member
Sep 3, 2004
254
3
18
Little Rock, AR
Aug 18, 2006
#2
  • Aug 18, 2006
  • #2
Sounds like a vacum leak to me. Check your sealing surfaces around the upper and lower intakes. Probably leaking in one of those areas. You can test with TB cleaner or other lubricant, I prefer oil in a squirt can, messy but less likely to catch fire.
 

ninety15.0

New Member
Mar 10, 2004
1,336
0
0
Aug 18, 2006
#3
  • Aug 18, 2006
  • #3
I would say that 12 is even too low. Mine idles at 16 and i thought that was a little low?!?! Check for proper routing and check the vac manifold on the pass side fenderwell
 

evilwater

New Member
Jul 30, 2003
70
0
0
windom MN
Aug 19, 2006
#4
  • Aug 19, 2006
  • #4
i just checked all that nothing? i have no idea
 
You must log in or register to reply here.

Similar threads

J
Engine Running like crap :(
  • justadude07
  • Sep 27, 2025
  • Fox 5.0 Mustang Tech
Replies
8
Views
336
Fox 5.0 Mustang Tech Oct 19, 2025
DadLife0724
P
Repeated P2004 DTC trouble code with no apparent symptoms
  • poehitman
  • Mar 11, 2026
  • SN95 V6 Mustang Tech
Replies
2
Views
180
SN95 V6 Mustang Tech Mar 12, 2026
poehitman
P
R
please help 87 mustang megasquirt 2 idle problems
  • robbie5.0
  • Jun 2, 2025
  • Digital Self-tuning Forum
Replies
2
Views
430
Digital Self-tuning Forum Jul 18, 2025
tate302
T
M
Engine 1988 Foxbody - Overheating Summer
  • MDrisc
  • Oct 26, 2025
  • Fox 5.0 Mustang Tech
Replies
10
Views
529
Fox 5.0 Mustang Tech Nov 28, 2025
Mustang5L5
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
808
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?