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  #1  
Old 10-19-2012, 09:11 AM
Not as smart as I think
 
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Default Idle speed

What is the normal idle speed for a V6? Mine is about 900, but I've read that some have it at 700.
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2001 Ford Ranger with the flare sides. 4x4 with a 4.0 engine. The only thing I did so far is: F/R Brakes, rotors, drums, F/R shocks, tires, bed cap, cone filter, hanger/shackles, F/P wheel bearing, upper control arm, lower ball joint, filler neck, fuel filter and DPFE sensor, muffler, sway bar links and spark plugs!
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  #2  
Old 10-19-2012, 10:13 AM
Ford Motor Company
 
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Man you must be booking it with an idle speed of 900 mph
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  #3  
Old 10-19-2012, 10:39 AM
Ford Ranger Owner
 
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Default Re: Idle speed

mine is at 1200 rpms. is there a way to change that? what could cause it to idle so high? its a 4.0
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  #4  
Old 10-19-2012, 10:40 AM
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Default Re: Idle speed

Quote:
Originally Posted by bamanation View Post
mine is at 1200 rpms. is there a way to change that? what could cause it to idle so high? its a 4.0
maybe just shit/carbon in your IAC.
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  #5  
Old 10-19-2012, 04:23 PM
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Default Re: Idle speed

Quote:
Originally Posted by bamanation View Post
mine is at 1200 rpms. is there a way to change that? what could cause it to idle so high? its a 4.0
There is a screw at the end of the throttle cable in the engine bay. Depending which way it is turned, it increases or decreases the RPM's at idle. I just want to know the accurate number to have it adjusted.
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2001 Ford Ranger with the flare sides. 4x4 with a 4.0 engine. The only thing I did so far is: F/R Brakes, rotors, drums, F/R shocks, tires, bed cap, cone filter, hanger/shackles, F/P wheel bearing, upper control arm, lower ball joint, filler neck, fuel filter and DPFE sensor, muffler, sway bar links and spark plugs!
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  #6  
Old 10-20-2012, 12:17 PM
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Quote:
Originally Posted by DannMarr

There is a screw at the end of the throttle cable in the engine bay. Depending which way it is turned, it increases or decreases the RPM's at idle. I just want to know the accurate number to have it adjusted.
Rangers don't have set screws, we have iac's
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  #7  
Old 10-21-2012, 11:43 AM
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Default Re: Idle speed

Quote:
Originally Posted by 02RangerFX4 View Post
Rangers don't have set screws, we have iac's
Understood. But there is a screw at the end of the throttle cable where you can adjust the spring tension. If you take up some slack off the cable, it will rev the engine at a higher speed at idle.
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2001 Ford Ranger with the flare sides. 4x4 with a 4.0 engine. The only thing I did so far is: F/R Brakes, rotors, drums, F/R shocks, tires, bed cap, cone filter, hanger/shackles, F/P wheel bearing, upper control arm, lower ball joint, filler neck, fuel filter and DPFE sensor, muffler, sway bar links and spark plugs!
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  #8  
Old 10-21-2012, 12:19 PM
Ford Tough
 
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Default Re: Idle speed

my last 2 stock 4L rangers ran around 600RPM (auto trans 2wd) my current with comp cam runs around 800.

My 2 explorers stock 4L average about 600RPM (auto trans 4X4)

hope this helps a bit
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  #9  
Old 10-21-2012, 12:23 PM
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Default

God question. My stock 3.0 idles at about 1000. After reading this it seems kinda high compared to some others.
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  #10  
Old 10-21-2012, 01:53 PM
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My 2.3 idles right below 1000
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  #11  
Old 10-22-2012, 03:03 PM
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Quote:
Originally Posted by MossyOakD
God question. My stock 3.0 idles at about 1000. After reading this it seems kinda high compared to some others.
Might want to clean your iac.

----------

Quote:
Originally Posted by DannMarr

Understood. But there is a screw at the end of the throttle cable where you can adjust the spring tension. If you take up some slack off the cable, it will rev the engine at a higher speed at idle.
Which end? Did your truck have a previous owner? Neater of the ends of my cable has a screw on it. One end has a green thing that has a spring on it to attach the throttle cable to the pedal, but that's it.
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  #12  
Old 10-22-2012, 08:22 PM
Not as smart as I think
 
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Default Re: Idle speed

Quote:
Originally Posted by 02RangerFX4 View Post
Might want to clean your iac.

----------



Which end? Did your truck have a previous owner? Neater of the ends of my cable has a screw on it. One end has a green thing that has a spring on it to attach the throttle cable to the pedal, but that's it.
Check the other end in the engine bay. The screw is not on the cable but below the holder where the cable sits in. You can adjusted how far the spring will retract. Counter clockwise will allow the rpm's to rise at idle.
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2001 Ford Ranger with the flare sides. 4x4 with a 4.0 engine. The only thing I did so far is: F/R Brakes, rotors, drums, F/R shocks, tires, bed cap, cone filter, hanger/shackles, F/P wheel bearing, upper control arm, lower ball joint, filler neck, fuel filter and DPFE sensor, muffler, sway bar links and spark plugs!
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  #13  
Old 10-23-2012, 10:05 AM
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Default Re: Idle speed

the IAC is what controlls the idle speed. you should never have to adjust the little screw on the throttle body.
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  #14  
Old 10-23-2012, 01:20 PM
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Default Re: Idle speed

Mine idles at ~500-600RPM. Sounds like it's about to stall :P
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  #15  
Old 10-23-2012, 01:59 PM
Psycho Pete
 
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Default Re: Idle speed

Quote:
Originally Posted by DannMarr View Post
Understood. But there is a screw at the end of the throttle cable where you can adjust the spring tension. If you take up some slack off the cable, it will rev the engine at a higher speed at idle.
don't mess with it. the computer controls the engine idle (via IAC valve), period, not a set screw. if the screw hasn't been tampered with, and the idle is high, there is something wrong. that screw sets the base TPS voltage, don't fiddle with it. not a carburetor.
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Last edited by Psychopete; 10-23-2012 at 03:07 PM.
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