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10-17-2004, 11:15 AM
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#1 | |
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AF Newbie
Join Date: Oct 2004
Location: Chesapeake, Virginia
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Mustang won't stay running
I have a 1999 Mustang GT, bought it new and never had a problem with it. All of the sudden it will start and rapidly die. If I press the gas pedal after starting I can keep it running and it runs smooth. As soon as I let off the gas it pretty much dies right away. All ignition connections / vacuum lines look good. Not sure where to start.... any ideas? Thanks.
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10-17-2004, 11:29 AM
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#2 | |
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AF Enthusiast
Join Date: Apr 2004
Location: Dearborn, Michigan
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Re: Mustang won't stay running
F-Found
O-On R-Road D-Dead |
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10-17-2004, 02:06 PM
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#3 | ||
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AF Enthusiast
Join Date: Sep 2004
Location: Sierra Vista, Arizona
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Re: Re: Mustang won't stay running
Quote:
It sounds like a bad sensor, but I'm not sure I could help ya there cause I don't know what kind of loop ford uses. You'd have better luck finding a mustang loyal forum somewhere. |
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10-17-2004, 05:15 PM
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#4 | |
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Master Tech Wanna-be
 Join Date: Jul 2003
Location: Downers Grove, Illinois
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Re: Mustang won't stay running
i know zip of fords, but in general:
check the throttle body for carbon build-up, check the IAC too. if dirty, spray with sensor-safe carb and choke cleaner(even if its EFI). if you have a multimeter/voltmeter, check system voltage. any check engine light/battery light? |
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10-19-2004, 10:18 AM
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#5 | |
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Banned
 
Join Date: Sep 2004
Location: Norfolk, Virginia
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Re: Mustang won't stay running
I don't think the throttle body would be loaded with carbon? But faulty MAF or TPS could be a culprit
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10-19-2004, 11:09 AM
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#6 | |
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AF Enthusiast
Join Date: Aug 2004
Location: Chippewa Falls, Wisconsin
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Re: Mustang won't stay running
That makes sense...
Or maybe (just maybe) bad gas... I've had a similar problem with a different car...but, damn my memory, I don't remember the problem/solution... |
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10-21-2004, 02:18 PM
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#7 | |
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AF Regular
Join Date: Jul 2002
Location: Chicago, Illinois
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Originally Posted by -Jayson-
F-Found O-On R-Road D-Dead spell it backwards and you get D-Driver R-Returned O-On F-Foot It sounds like you have a bad Idle Air Control valve. Fords were nortorious for having these go bad. It sounds like it is sticking closed. |
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