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

Suggested idle rpm

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Old 12-08-2004, 08:02 PM
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Cedarkill
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Default Suggested idle rpm

Just curious what the suggested idle rpm should be roughly? Is it around 700 rpm? Mines idles too high, it's around 900-1000 rpms at low idle, so just curious how much to set it down?
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Old 12-08-2004, 08:17 PM
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bull8t
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Default RE: Suggested idle rpm

mine idles at about 1100 when I first start her up. After about 20 seconds it drops down to 900 or something
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Old 12-08-2004, 08:18 PM
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nanaki
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Default RE: Suggested idle rpm

mine idles at around 1100-1200 on cold mornings. when it's warmed up it idles around 700-800
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Old 12-08-2004, 08:20 PM
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jdaniel
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Default RE: Suggested idle rpm

Mine idles dead on 700 to 800. I used the digital read out and it usually stays in the low 700's.
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Old 12-08-2004, 09:18 PM
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Cedarkill
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Default RE: Suggested idle rpm

Cool, thanks guys. Yea put in a 70mm TB today and also shimmed my throttle cable a little, because it had a little slack to it, so I took some of the play out. But I think I have a few too many washers and it's cracking the TB open a little even at idle, because it high idles at like 1700 and low idles around 1000. I'll have to remover a washer or two tomorrow, hopefully that'll do it.
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Old 12-09-2004, 12:51 AM
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jdaniel
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Default RE: Suggested idle rpm

Sounds like a plan.
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