Stalls out and idle is inconsistant

gt_andy · May 15th, 2010, 10:51 PM

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?

scp616 · May 15th, 2010, 11:12 PM

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.

wolfmania · May 15th, 2010, 11:49 PM

please check this link, it might be helpful

Quick steps of cleaning the IAC.

dcook_14 · May 17th, 2010, 10:39 AM

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?

May 15th, 2010, 10:51 PM	#1
gt_andy Regular 2000 Mustang GT 13.10@103 Join Date: Oct 2007 Location: Toledo, OH Posts: 309 iTrader: 0 reviews	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? __________________ 2000 Ford Mustang GT 5spd (TOY) 1997 Ford Tunderbird LX = Daily Driver

May 15th, 2010, 11:12 PM	#2
scp616 Regular 2002 Mustang GT Join Date: Mar 2009 Location: SC Posts: 326 iTrader: 0 reviews	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. __________________ 02 GT --> long tube headers w/ x pipe and flow masters, throttle body w/ intake plenum, cold air intake, short throw, 255 nitto 555's all around, 373 diff gears, 2 inch lowering kit w/caster camber plates, sony radio working with stock system

May 15th, 2010, 11:49 PM	#3
wolfmania Regular 2000 Mustang GT Join Date: Apr 2010 Location: Kingdom of Bahrain Posts: 140 iTrader: 0 reviews	please check this link, it might be helpful Quick steps of cleaning the IAC. __________________ 2000 Mustang GT Auto -Custom o/r X-pipe -Flowmaster super 44 mufflers Facebook: http://www.facebook.com/Abdulla.Rawanbakhsh Email: wolfmania90@hotmail.com

May 17th, 2010, 10:39 AM	#4
dcook_14 Banned 2004 Mustang GT 12.35@114.08 w/ 1.88 60' Join Date: Feb 2009 Location: Waterloo, IA Posts: 7,015 Blog Entries: 2 iTrader: 7 reviews	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? __________________ Do the Right Thing, Cook. ~Zip.

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