Stalls out and idle is inconsistant
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Old May 15th, 2010, 10:51 PM   #1
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Stalls out and idle is inconsistant


I have a 2000 GT 2v 4.6l My car is idleing weird. IT will be at 1200rpms and then go as low as like 300rpms to rev back up to 1200. Sometimes will even stall out. Its rather annoying to pull up to a stop light and have to start your car up or people think im revin at them. Its a 5 speed and does this in N or any gear w/ clutch in. I do have a 70MM TB and a 75MM Plentum and new TPS sensor.

Any ideas?
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Old May 15th, 2010, 11:12 PM   #2
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Do you have the factory mass air flow still?
Also does it make a difference when you turn your AC on or off? It sounds like it could by you're IAC.
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Old May 15th, 2010, 11:49 PM   #3
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please check this link, it might be helpful

Quick steps of cleaning the IAC.
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Old May 17th, 2010, 10:39 AM   #4
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I had the same thing happen to my car last week. Same EXACT problem. When the idle is bouncing around, unplug the MAF. I unplugged my MAF and it smoothed right out. Been driving like that for over a week now.


Do you have a tuner where you can monitor MAF counts?
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