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  #1  
Old 01-27-2011, 04:09 PM
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Default proper idle setting on a 2.9

what is about the right "rpm" idle on a warm 2.9?
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  #2  
Old 01-28-2011, 06:10 AM
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Default Re: proper idle setting on a 2.9

my 2.9 idles at about 600 to 700.
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  #3  
Old 01-28-2011, 10:45 AM
Ford Ranger Owner
 
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Default Re: proper idle setting on a 2.9

How do you adjust the idle speed of a 2.9
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1988 Ford Ranger XLT Standard cab, 2.9L V6, 5 Speed stick, 2wd.
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  #4  
Old 01-28-2011, 12:53 PM
Psycho Pete
 
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Default Re: proper idle setting on a 2.9

Quote:
Originally Posted by kilich View Post
How do you adjust the idle speed of a 2.9
Find someone who can re-program your computer - but I haven't of anyone doing this on a 2.9L. Computer controls the idle - if the idle is wrong, something else is contributing to that.
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1987 Ford Ranger Short Bed 5.0L/T-5 Project
1988 Ford Ranger Long Bed Parts Truck
1993 Ford Tempo 2.3L OHV HSC Auto - D/D Stock.
1999 Honda Accord VTEC Auto
2002 Dodge Caravan - 3.3L Auto
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  #5  
Old 01-28-2011, 01:57 PM
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Default Re: proper idle setting on a 2.9

didnt say it was wrong i was just wondering what was a common idol on a 2.9
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  #6  
Old 01-28-2011, 06:04 PM
Chrome Dont Get You Home
 
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Default Re: proper idle setting on a 2.9

mine idles at around 1k with a manual its probably a bit lower on an Auto
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1990 Ranger Extended Cab
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Planning to put a 347 and a T-5 in it eventually

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Originally Posted by FireRanger View Post
It looks like someone attacked the front of the truck with a bedazzler.
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  #7  
Old 01-28-2011, 06:21 PM
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Default Re: proper idle setting on a 2.9

kind of on the same thread, I had a p1506 code, and my engine would idle warm at around 1200. I changed the IAC today and my Idle only dropped to just under 1000 ( est 950 ) Im used to my little rice burner idling at 6-700. is this high idle normal for a ranger (3.0 auto ) or does the computer need reset, if so how do you reset the computer. The guy at advanced auto said it will take a while for the computer to re adjust itself (dont know how long a little while is..) any advice? thanks
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  #8  
Old 01-29-2011, 03:50 PM
'89 2.9L 5 speed
 
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Default Re: proper idle setting on a 2.9

850 manual
800 auto
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  #9  
Old 01-29-2011, 04:18 PM
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Default Re: proper idle setting on a 2.9

how do I get it down to 800?
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  #10  
Old 01-30-2011, 10:24 AM
'89 2.9L 5 speed
 
Join Date: Jan 2011
Posts: 16
Default Re: proper idle setting on a 2.9

first off, let me state i'm a first timer. i'm no slouch, but i truly lack credibility in the vocabulary of auto mechanics so forgive me forehand.

i have an '89 5 speed. not exactly sure if you can change it the same way on any ranger past '92.

all i needed was a flathead screw driver. take off the housing NEXT to the fresh air intake into engine (not crankcase, where filter is). you might even be able to get to it without (i did, i just cracked the housing a little bit) you will see a flathead bolt with spring/bridge.

get your engine to operating temperature - if you loosen it, it will lower your rpm. if you tighten it, it will raise.

i know people here say it's controlled by a computer and if you open your hood and read the labels in front you, it will say likewise.

all i know is that i could do it just fine manually by loosening or tightening the bolt.

hope any of this helps...

let me know how it goes! sorry for the poor terminology.
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  #11  
Old 01-30-2011, 11:01 AM
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Default Re: proper idle setting on a 2.9

any chance you can post a pix of what ur talking about. I have a 99 ranger, and I know where the air filter is ( i changed it) but not sure about the other stuff you mention
thanks
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  #12  
Old 01-30-2011, 11:52 AM
'89 2.9L 5 speed
 
Join Date: Jan 2011
Posts: 16
Default Re: proper idle setting on a 2.9



now, right in front of the engine block (someone ^^^^^already took the housing off) you can see the metal plate with 2 bolts. on top of it is the line you can adjust your RPMs with (see the spring?). at the end of the line (closer to radiator, not firewall) there is a flathead bolt where you can adjust RPMs. unfortunately it falls out of the picture but you should get the idea. when the spring gets tightened your revolutions will be as well.



there is a picture with the housing still on.

Last edited by loweredexpectations; 01-30-2011 at 12:00 PM.
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  #13  
Old 01-31-2011, 05:59 AM
Psycho Pete
 
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Posts: 1,488
Default Re: proper idle setting on a 2.9

That screw is for setting the base idle voltage, this is far from being like a carburetor. Do not mess with it unless you know what you are doing! That's my warning, but ultimately it's you truck...
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1987 Ford Ranger Short Bed 5.0L/T-5 Project
1988 Ford Ranger Long Bed Parts Truck
1993 Ford Tempo 2.3L OHV HSC Auto - D/D Stock.
1999 Honda Accord VTEC Auto
2002 Dodge Caravan - 3.3L Auto
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  #14  
Old 01-31-2011, 10:51 AM
'89 2.9L 5 speed
 
Join Date: Jan 2011
Posts: 16
Default Re: proper idle setting on a 2.9

Quote:
Originally Posted by Psychopete View Post
That screw is for setting the base idle voltage, this is far from being like a carburetor. Do not mess with it unless you know what you are doing! That's my warning, but ultimately it's you truck...
understood, and thanks for the heads up!

i guess just make sure your throttle position sensor (TPS) is firing at the right time too. somewhere between 0.6-1.0 volts according to fordfuelinjection.com
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