4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

idleing

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Old Mar 29, 2005 | 11:56 PM
  #1  
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GIGM08GT
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this is probably a stupid question that I just can't figure out but my when my car is idleing at a stop light it seems like it can't find a good idle spot. it bounces between about 600 and 900 rpm. any answers
Old Mar 29, 2005 | 11:59 PM
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try replacing youre IAC, i had that issue, and replacing it helped smooth it out some. some here will tell you to clean it, which can be done, i found it eaiser to just replace it.
Old Mar 30, 2005 | 12:02 AM
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IAC? whats that and whats it gonna cost
Old Mar 30, 2005 | 12:12 AM
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it is an Idle Air Control valve.
i do not recall exactily, but it was like 40 bucks or so at the ford store.

i had a pic once, ill see if i can find it.
Old Mar 30, 2005 | 12:13 AM
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I may just end up cleaning it if I can cause I got the Haynes repair book but may replace it too. Thanks
Old Mar 30, 2005 | 12:24 AM
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i am almost positive the manual has a pic of it, but if i recall it is off a 98 cobra.
lets me know if you need that pic.

Old Mar 30, 2005 | 12:26 AM
  #7  
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it only shows the 3.8 engine in the book and the 5.0 but no 4.6. so if you have the pic of the 4.6 that would be great
Old Mar 30, 2005 | 12:44 AM
  #8  
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here ya go... i think.

[IMG]local://upfiles/7558/2D892BF8A8834D779C87735C821F3C25.jpg[/IMG]
Old Mar 30, 2005 | 12:45 AM
  #9  
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yup.. it attached. click on the pic, the iac is circled in red.
Old Mar 30, 2005 | 06:00 AM
  #10  
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Actually dont replace it. Just get a can of carb cleaner and clean the **** out of it. Its probably due to a lot of carbon build up in it. Try that before you replace it.



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