Topic Sponsor
1987 - 1996 F150 Still running strong! Talk about your 8th and 9th generation Ford F150 trucks.

High idle

Thread Tools
 
Search this Thread
 
Old Apr 3, 2015 | 01:38 PM
  #1  
BROWNINGFX4's Avatar
Thread Starter
Senior Member
 
Joined: Apr 2010
Posts: 5,831
Likes: 28
From: Panama City, Florida
Default High idle

91 4.9 5spd 4x4 I parked my truck after running a few errands get back in and it's idling high. Any ideas what it could be? Driving it right now just the idle is high before I start driving or when u press in the clutch
Reply
Old Apr 3, 2015 | 01:41 PM
  #2  
BROWNINGFX4's Avatar
Thread Starter
Senior Member
 
Joined: Apr 2010
Posts: 5,831
Likes: 28
From: Panama City, Florida
Default

I can literally not touch the gas at all and slowly let off the clutch and it'll go forward on its on
Reply
Old Apr 3, 2015 | 06:02 PM
  #3  
BROWNINGFX4's Avatar
Thread Starter
Senior Member
 
Joined: Apr 2010
Posts: 5,831
Likes: 28
From: Panama City, Florida
Default

Bump bump
Reply
Old Apr 3, 2015 | 07:22 PM
  #4  
Crownman's Avatar
5 Year Member
10 Year Member
Photogenic
Liked
 
Joined: May 2013
Posts: 1,251
Likes: 263
From: San Antonio, Texas
Default

Pull the connector for the IAC and see if the idle changes. Start checking for vacuum leaks. Check the throttle cable to make sure it isn't hanging up and holding the tb oprn slightly.
Reply
Old Apr 4, 2015 | 09:32 AM
  #5  
FORD TUFF's Avatar
Senior Member
 
Joined: Mar 2015
Posts: 104
Likes: 6
Default

How about checking for codes ? crownman has some good starting points there
Reply
Old Apr 4, 2015 | 06:46 PM
  #6  
BROWNINGFX4's Avatar
Thread Starter
Senior Member
 
Joined: Apr 2010
Posts: 5,831
Likes: 28
From: Panama City, Florida
Default

No codes are being thrown an ill check that thanks! Also it's pretty odd but it was doing it sometimes yesterday but hasn't done it all today.. Gonna clean the iac and check the cable etc thanks for the tips.
Reply
Old Apr 5, 2015 | 05:00 PM
  #7  
kd3pc's Avatar
5 Year Member
10 Year Member
 
Joined: Jun 2013
Posts: 517
Likes: 93
Default

IAC and TPS come to mind as the most likley, after you check the physical links and vacuum lines.
Reply




All times are GMT -4. The time now is 09:05 AM.