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

High hanging revs after blip of throttle?

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Old 09-06-2005, 02:59 PM
  #11  
SilverGTV8
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Default RE: High hanging revs after blip of throttle?

They fixed it by removing a parameter that controls idle.

Essentially they same thing as restricing the IAC.

I restricted mine after doing a Accufab TB and C&L plenum and it worked perfect.

ORIGINAL: 97slobra


ORIGINAL: FWP!

The problem really isn't with where the idle sits, it's how long it takes it to calm down to that idle.

Trust me, i had the same problem when i got a accufab throtle body. I took it to a local shop and they tuned it to a diablo chip, and now my car revs like it did when i bought the car.
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Old 09-06-2005, 04:42 PM
  #12  
MikeHawke
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Default RE: High hanging revs after blip of throttle?

i did the pipecap in the IAC thing and the car started to develop what felt like a miss around 3K. It was weird. I took out the "restrictor" and it was fine again. I even tried experimanting with different sized holes. It would be fine for 100 miles or so, then that "miss" would start to appear again.

I dunno. it was weird so now i just live with the idle hang.
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Old 09-06-2005, 04:50 PM
  #13  
02StanGT
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Default RE: High hanging revs after blip of throttle?

Get an aluminum flywheel. The most mine ever hangs at anymore is 1100. It only hangs while I'm moving though not at a stop.
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Old 09-06-2005, 06:18 PM
  #14  
FWP!
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Default RE: High hanging revs after blip of throttle?

well I fixed the problem by making a new gasket out of some teflon, but thanks for the reply. The idle dies down to 750 damn quick now, shifting has improved GREATLY.
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Old 09-07-2005, 10:33 PM
  #15  
pete1665
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Default RE: High hanging revs after blip of throttle?

all you need is a thin peice of cardboard for the gasket. old tissue box... shoe box...
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