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2002 GT died while slowing down to stop.

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Old 08-26-2008, 12:51 PM
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Willy Mo
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Default 2002 GT died while slowing down to stop.

I just bought my 2002 GT 5spd with 14200 miles, I was cruising down the highway in 5th gear until I came up to a stoplight. I pushed the clutch in and began to coast to a stop. The RPM's dropped slowly like normal but kept dropping past 500rpm and died while rolling to a stop. The car started right up, but what would cause the car to die? O2 sensor, MAF, etc? Please help I would like to get this problem solved.
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Old 08-26-2008, 01:09 PM
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Could be the IAC valve. It happens several times with these cars. There is a sticky about this in one of the tech stickies on the main 4.6 Modular page.
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Old 08-26-2008, 01:18 PM
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I thought about that, and i wondered in the mustangs had the IAC problem just like other fords.
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Old 08-26-2008, 02:10 PM
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I had the same problem with my old gt but I cleaned my IAC valve and I changed a vacum line that had a hole in it.
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Old 08-26-2008, 11:25 PM
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I was planning on cleaning my IAC but my car has a mach 1 shaker hood scoop. and its gonna be a pain to get it off, but still doable.
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Old 08-27-2008, 10:33 AM
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First thing would the IAC, but if you have a tune on the car the Dashpot Decay Rate setting will also make your car idle funky and die when coasting to a stop.

Last edited by OzzDOA; 08-27-2008 at 10:34 AM. Reason: damn typos
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Old 08-28-2008, 08:00 AM
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Originally Posted by OzzDOA
First thing would the IAC, but if you have a tune on the car the Dashpot Decay Rate setting will also make your car idle funky and die when coasting to a stop.

Well I do not have a tune, nor do i think there is one because The guy who had it before me was 60 years old. It has gotten better since I have been driving it. I think it just was from not being driven much. I mean my car is an 02 with only 14200 miles on it. But I am going to try to clean the IAC to.
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Old 08-30-2008, 11:19 AM
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Ok guys I NEED HELP. I cleaned the IAC, and it didnt help. It still idles a little rough and las night it died on me twice after I pushed the clutch in and was rolling to a stop. I am gonna look for a vacuum leak today but I need help! Any suggestions please.
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Old 08-30-2008, 01:11 PM
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I don't know why cleaning the IAC is offered as a solution. Cleaning the IAC rarely helps solve the problem.

*****, IAC failures on New Edge's are as common as pumping gas every 220 miles. Having the clutch depressed and the engine cutting out is a tell-tale sign of a IAC failure. They fail for most everyone at some point or another. Go ahead and replace it, if it doesn't fix the problem, understand it's a well spent 60 bucks and you'll not have to worry about it for a long time to come.

I'm confident it's your IAC.
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Old 08-30-2008, 03:18 PM
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Do you have a CAI?
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