Runs rough in morning till it warms up.

1997 MERCURY MARQUIS
110,000 MILES
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TRKYDODGER
  • MEMBER
  • 1 POST
Runs very rough in morning till it warms up. As soon as it warms up it seems like something kicks in all of a sudden and it runs fine.
Sep 18, 2011 at 12:10 PM
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JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
It could be many things. Check fuel pump pressure when it's cold to see if it is within spec. Check for tune up. Also, if the check engine light is on, have the computer scanned to see if there are any trouble codes. They will direct you to a problem. Most parts stores will scan for free. Also, check for vacuum leaks.
Sep 19, 2011 at 1:43 AM
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