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

Idle problem

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Old 05-22-2007, 03:24 AM
  #1  
clix813
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Default Idle problem

Well after cleaning my IAC and replacing my PCV my car still idles wierd it goes up and down between 400 and 700 rpm. It will drop and rise about 5 times every 30 seconds. What else could it be?
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Old 05-22-2007, 03:28 AM
  #2  
CrazyDan
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Default RE: Idle problem

could be your chip put it back to factory tuning and see what happens i have a simlar problem[:@]
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Old 05-22-2007, 05:10 AM
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BleedinBlue
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Default RE: Idle problem

Take off and replace a battery cable so that the computer will reset its self.

If that doesn't take care of the problem, my $$ is on a vacuum leak.
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