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Car stalling in neutral while moving, ideas?

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Old 06-08-2009, 01:35 AM
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gxcross
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Default Car stalling in neutral while moving, ideas?

I have an 07 turbo that I recently purchased used. Occasionally it is doing something really odd so I'm hoping someone here has an idea. I'd be going 10-15 mph or so in 2nd gear, and i push down on the clutch while braking. I'm still moving, but then the car would stall and I'd have to restart the engine. The first couple times I thought it might be user error, but it's happened 5-6 times now in the past 2 months. Am I doing something wrong, or is there a problem with the car?

Thx!
Old 06-19-2009, 06:17 PM
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chops
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Whoa. Read this issue, and it brought back memories of my first car, a 2001 BMW 330ci that did the exact same thing. When slowing down to a stop or for a turn, if I pushed the clutch in the RPM would dip below the idle RPM and stall the car. NOT FUN if you were turning and your car stalls, locking up steering, etc. Service tried to resolve it by raising the idle RPM, but it still happened. It was intermittent, so they could never fully track it down. Very interested to hear what your Porsche advisor has to say.
Old 06-22-2009, 04:16 AM
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tifosi66
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Check the Throttle Positioning Sensor (TPS).
Old 06-22-2009, 01:45 PM
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gooseNSJ4
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This could be a long shot but check your cats, or better yet remove them and see if the problem is still persistent. There could be a exhaust flow problem making the car stall at low rpms. Again, long shot but just one place to look for possible problem.
Old 06-23-2009, 07:06 PM
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gxcross
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Thanks guys! Appreciate the ideas. I have it in the shop right now, hopefully they'll be able to figure it out.
Old 06-29-2009, 02:15 AM
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gxcross
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just to close this out, it turns out that the intercooler was damaged, most likely from a fender bender. Bummer that it wasn't disclosed when I purchased the car, but glad to have figured out what the problem was.
Old 06-29-2009, 01:42 PM
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Glad to hear you found the problem.... shame you did not know about it.



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