Question about 1999 Mercury Grand Marquis

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Car starts but will not run unless acelerator is depresssed

Car has 74,000 miles sits inside garage most of week. used dry gas and fuel system cleaner a couple of weeks ago and it ran fine, but now has reoccuring problem. Car starts up immediately but will not stay runing unless you depresee the acelerator, once you remove your foot it stalls out. Need to replace fuel filter, but can not find it?

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  • Mercury Master
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Check along frame rail on passenger side under rear seat area.

Posted on Jan 23, 2009

  • Mike Butler
    Mike Butler Jan 23, 2009

    Although I answered your initial question, I might add that if it runs o.k. going down the highway, I probably wouldn't change fuel filter to solve stall at idle problem.

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