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

idle problem

  • Thread starter Thread starter korsburn
  • Start date Start date Jul 7, 2005

korsburn

New Member
Mar 30, 2005
50
0
0
Jul 7, 2005
#1
  • Jul 7, 2005
  • #1
got a question i just added a new 70 mm throttle body and 70 mm throttle body spacer and now my idle wond come down it sits between 1000 and 1300 could it be my throttle positioning sensor needs cleaning or something. before i did the swap my car would idle really hi out of no where i would shut it off and then start it back up and it would be fine. any one have any ideas
 

jrichker

StangNet's favorite TOOL
In Remembrance. Thank you for your contributions
Mar 10, 2000
27,512
2,813
234
Dublin GA
Jul 7, 2005
#2
  • Jul 7, 2005
  • #2
Look for a vacuum leak. Check all the vacuum hoses & fittings. Use a squirt can with motor oil in it to squirt on the mating flages. When you hit the leak, the oil is sucked into it & the engine speed changes. The oil is a bit messy to clean up, but poses no flash fire hazard like an inflammable substance like carb cleaner or propane.
 
You must log in or register to reply here.

Similar threads

F
Engine 1988 Foxbody idle issues
  • fernandosgarage55
  • Apr 28, 2026
  • Fox 5.0 Mustang Tech
  • 2
Replies
26
Views
630
Fox 5.0 Mustang Tech Apr 30, 2026
AeroCoupe
7
Engine Random hanging idle
  • 706 Saleen
  • Feb 11, 2026
  • Fox 5.0 Mustang Tech
Replies
9
Views
667
Fox 5.0 Mustang Tech Feb 19, 2026
86HO5.0
8
8
Foxbody high rpms and surging rpms
  • 86foxseth
  • Jun 9, 2026
  • Fox 5.0 Mustang Tech
Replies
4
Views
217
Fox 5.0 Mustang Tech Jun 13, 2026
Noobz347
W
intermittent start and rough, high idle. 06 gt
  • Woe06
  • Jan 7, 2026
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
3
Views
258
2005 - 2014 S-197 Mustang -General/Talk- Jan 7, 2026
Noobz347
D
Engine Throttle sticky even after cable replacement
  • dqureshi06
  • Aug 16, 2025
  • Fox 5.0 Mustang Tech
Replies
6
Views
355
Fox 5.0 Mustang Tech Aug 17, 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?