car problems

1992 MERCURY MARQUIS
V8 • 2WD • AUTOMATIC
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92 GRAND MAR
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  • 1 POST
i have a 1992 mercury grand marquis 4.6 v8 and my car drives good but when u stop at a traffic light it doesnt idle it just shuts off. need to know whats wrong
Mar 3, 2011 at 7:06 PM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,989 POSTS
look for vacuum leaks or possibly a malfunctioning IAC vavle.
Mar 3, 2011 at 7:20 PM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
Also run a scan, not all faults will set a MIL.

Mark (mhpautos)
Mar 3, 2011 at 10:42 PM
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