Idle Adjustment on 4.6 - Mustang Evolution

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Old 03-23-2005, 09:34 PM   #1
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Idle Adjustment on 4.6

Has anyone done this to their car? I need to adjust the idle down a hair. When the choke kicks in or even the A/C stops running, the car wants to lurch forward. I need to drop about 200 RPM'S and see how that helps. Gotr any ideas or suggestions. I need to know how to do this! Thanks!!! :drive:
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Old 03-23-2005, 09:40 PM   #2
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check to make sure your idle screw aint screwed in to much, but its probably not even really effecting it just a little, check just to make sure,

you may want to clean the maf, it probably needs it along with the IAC, with no residue on contact electronic cleaner.
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Old 03-23-2005, 09:48 PM   #3
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Thanks Spector, I already cleaned the maf & IAC with no change. I just read an article about throttle bodies that said don't touch any screws in the throttle body. Adjust the throttle linkage?????? What the hell???????
Anyway I now have to research to find out where the hell the adjustment screw is at. It's unnerving to be sitting at a traffic light behind someone and your car lerches forward about 6 to 8 inches until you apply more brake. It is now becoming a pain in the ***. Thanks for the advice!
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Old 03-23-2005, 10:03 PM   #4
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Quote:
Originally Posted by mohrnormal
Thanks Spector, I already cleaned the maf & IAC with no change. I just read an article about throttle bodies that said don't touch any screws in the throttle body. Adjust the throttle linkage?????? What the hell???????
Anyway I now have to research to find out where the hell the adjustment screw is at. It's unnerving to be sitting at a traffic light behind someone and your car lerches forward about 6 to 8 inches until you apply more brake. It is now becoming a pain in the ***. Thanks for the advice!
Mine does that sometimes, so now I just sit in neutral at stoplights.
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Old 03-23-2005, 10:27 PM   #5
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You are better off doing it with the tune
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Old 03-23-2005, 10:33 PM   #6
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Quote:
Originally Posted by whipster24
You are better off doing it with the tune
Yeh, this chip I picked up today should help me out alot. No more weird downshifts from my auto.
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Old 03-23-2005, 10:38 PM   #7
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auto? (first poster)
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Old 03-23-2005, 10:41 PM   #8
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Quote:
Originally Posted by SpectorV
auto? (first poster)
From what I could tell yeh, talking about it lurching at stop lights...lol
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Old 03-25-2005, 08:18 AM   #9
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Had this problem with mine as well. There is an allen head scre on the underside of the TB. Make sure yours isnt backing out like mine was.
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