1994-2004 V-8 GT, GTS, Bullitt, Mach 1, and Cobra

03 GT Automatic Dies at a Stop with high rpm

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Old Jun 8, 2016 | 03:34 PM
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usaf1965's Avatar
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03 GT Automatic Dies at a Stop with high rpm

When I take off and get up over 50mph quickly , and start to slow down the rpm will stay at 2000rpm when I'm at 20 mph and when I stop completely it drops below 500 and dies. If I don't slow down it will gain speed by itself and won't change gears for a good 30 seconds. I have A NEW IAC A NEW THROTTLE BODY AND NEW MAF. I found and fixed a vaccum leak which didn't fix it. Any help??? Also if I put it in neutral when I slow down the rpm will go up to 3000 rpm
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Old Jun 8, 2016 | 09:43 PM
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From: ventura county california
What is the brand of the IAC motor?
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Old Jun 9, 2016 | 09:48 AM
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Motorcraft
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Old Jun 9, 2016 | 07:32 PM
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When I take off and get up over 50mph quickly , and start to slow down the rpm will stay at 2000rpm when I'm at 20 mph and when I stop completely it drops below 500 and dies. If I don't slow down it will gain speed by itself and won't change gears for a good 30 seconds. I have A NEW IAC A NEW THROTTLE BODY AND NEW MAF. I found and fixed a vaccum leak which didn't fix it. Any help??? Also if I put it in neutral when I slow down the rpm will go up to 3000 rpm
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