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

bad idle

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Old 03-31-2007, 03:14 AM
  #1  
clix813
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Default bad idle

it starts fine then slowly drops to 300 rpm goes back to the same idle but some times it will just stall i checked my maf and cleaned it but i cant fined anything i do have a realy bad exhaust leak could that be causing?
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Old 03-31-2007, 03:49 AM
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97targa
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Default RE: bad idel

I hate when people resort to the answer I'm gonna give you, but clean your IAC. It controls the amount of air that passes your T/B at idle to keep it steady!
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Old 03-31-2007, 04:05 AM
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Brute03
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Default RE: bad idel

+ 1 on the IAC, try cleaning that with some brake cleaner and see if the "idle" smooths out
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Old 03-31-2007, 04:05 AM
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jpmustanggt
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Default RE: bad idel

Couldn't resist, I hope this was a typing mistake, "idle"
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Old 03-31-2007, 05:53 AM
  #5  
clix813
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Default RE: bad idel

yeah that was a type-o lol
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