Throttle screw ??? - Ford Mustang Forum
Like Tree1Likes
  • 1 Post By Dataken
LinkBack Thread Tools
post #1 of 4 (permalink) Old 04-08-2017 Thread Starter
Usaf1988's Avatar
Joined: May 2016
Posts: 3
Throttle screw ???

What is it ? My car is idling and stubling when in drive and reverse

Sent from my LGMS631 using Tapatalk

Usaf1988 is offline  
Sponsored Links
post #2 of 4 (permalink) Old 04-09-2017
SHELBY GT 350 Member
Classic Member
4.6L Member
SoCal2V's Avatar
Joined: Sep 2010
Location: see user name
Posts: 8,705
Doubt it has anything to do with the throttle plate set screw. If stumbling at idle, or idle in Drive/Reverse, first thing to verify is no vacuum leaks. Following that would be IAC valve operation.

2001 GT Convertible
/1967 Coupe
All the usual bolt-on's /200 I6, C4

And a few Explorers too... 2008 4.0 XLT 4x2, 1996 XLT 5.0 4x2, 2003 Sport Trac XLT 4.0 4x4
SoCal2V is offline  
post #3 of 4 (permalink) Old 04-09-2017 Thread Starter
Usaf1988's Avatar
Joined: May 2016
Posts: 3
Whats the easiest way to find a vaccum leak.. Sorry im 19 and just starting school for auto tech. So im new to this

Sent from my LGMS631 using Tapatalk
Usaf1988 is offline  
post #4 of 4 (permalink) Old 04-20-2017
Dataken's Avatar
Joined: Jul 2014
Location: Arroyo Grande
Posts: 124
To find vacuum leaks you can use starter fluid spray. Do a quick google and you can see how its done. Also just check all the hoses and see if any of them are brittle and replace as needed.

Also check the IAC value this thing gets really dirty and can cause idle issues. You can pull it off and clean it with throttle body cleaner. Again you can youtube this for your car and see how its done. You could also just replace this part if its really bad I dont think the cost is that much.
Usaf1988 likes this.

2002 Ford Mustang GT, 5 Speed, EiBach/Maximum Motorsports Sway Bars, Coil Over Springs, Caster Plates, Panhard Bar, Sub Frame Bar, Strut Tower Brace, KONI Rear Shocks. Pioneer Stereo, MGW Short Throw Shifter, RatFink Handle, interior led lights & red under dash. Chrome Pedals. Cobra Hood. Led reverse lights. Tint 5% limo in the back. 50% in the fronts. AirRaid CAI, Throttle Body Spacer Plate, MDK Coil Over Packs, Borla S Type Cat Back System, Bullitt Wheels, Hankook 285/265 Tires
Dataken is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a VALID email address for yourself, otherwise you will not receive the necessary confirmation email needed to confirm, validate and activate your new AFM member account.

Failure to provide a VALID email address, will result in the cancellation of your new AFM member account registration.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On

For the best viewing experience please update your browser to Google Chrome

Search Engine Friendly URLs by vBSEO 3.6.1