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  #1  
Old 06-21-2011, 06:37 PM
my clean XLT my clean XLT is offline
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Default any help will do

I've got this 99 ranger with the 3.0 and she stumbles just a bit off idle. In fact the idle isn't exactly smooth but it's acceptable. It's when I step on the gas that she stumbles briefly and then comes on OK. This event happens in & out of gear. I've changed the plugs to the motorcraft fire wire, bosch performance wires.I took the truck to a friends shop and he hooked up an assortment of dianostic tool that basicly indicated that there wasn't a problem. (no codes) We cleaned the MAF TPS throdle body & I run about 3 oz. of lucas fuel injector cleaner in a tank a couple times a month.Oh yea , it;s more noticeable when warm but if I shut it off for a few( 10 to 15 min) & fire her back up she runs on all cylinders for a bit, then it,s back to the stumbling*** Any help will be appreciated
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She's just a black extented cab/ 4 door 3.0 w/ a 5 speed auto. Nothing really extraorniary but she's all mine.(& it's all one color w/ matching tires)
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  #2  
Old 06-21-2011, 06:39 PM
DiabloBlanco DiabloBlanco is offline
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Default Re: any help will do

Clean your IAC, strange it isnt throwing a code? How long has this probelm been happening? recent?
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  #3  
Old 06-21-2011, 06:43 PM
my clean XLT my clean XLT is offline
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Default Re: any help will do

About 6 mos but more noticeably lately IAC?
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  #4  
Old 06-21-2011, 06:45 PM
DiabloBlanco DiabloBlanco is offline
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Default Re: any help will do

Idle air control valve. looks like this



Uploaded with ImageShack.us
and its on your throttle body.
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  #5  
Old 06-21-2011, 06:50 PM
my clean XLT my clean XLT is offline
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Default Re: any help will do

I,ll give it a shot of carb cleaner in the morning be fore I head out to work
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She's just a black extented cab/ 4 door 3.0 w/ a 5 speed auto. Nothing really extraorniary but she's all mine.(& it's all one color w/ matching tires)
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  #6  
Old 06-21-2011, 06:52 PM
DiabloBlanco DiabloBlanco is offline
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Default Re: any help will do

NOO! it needs electrical contact cleaner. Such as MAF cleaner.
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  #7  
Old 06-21-2011, 06:56 PM
my clean XLT my clean XLT is offline
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Default Re: any help will do

I,m just a shade tree mech. who,s trying to save a few cents thanks
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She's just a black extented cab/ 4 door 3.0 w/ a 5 speed auto. Nothing really extraorniary but she's all mine.(& it's all one color w/ matching tires)
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  #8  
Old 06-21-2011, 06:58 PM
DiabloBlanco DiabloBlanco is offline
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Default Re: any help will do

You will ruin the sensor thats in it. Youll melt it, thats what carb cleaner does. If you dont have elecrical contact cleaner dont even bother with it.
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  #9  
Old 06-21-2011, 07:20 PM
Fordzilla80 Fordzilla80 is offline
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Default Re: any help will do

Kinda seems like what my truck's been doing for awhile. But mine gets real severe after a little bit of driving. Unfortunately I don't have a fix for it yet.
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  #10  
Old 06-21-2011, 07:27 PM
my clean XLT my clean XLT is offline
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Default Re: any help will do

Know that when I find one I'll be bragen bout it ,actually shareing what worked for me fit s better
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