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1998 Grand Marquis won't start when its cold out

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    1998 Grand Marquis won't start when its cold out

    So like it says my merc won't start when its cold outside. It cranks fine but won't fire. But now for the curious part, if I turn the blower motor off it fires just fine. I have never seen that before. My fuel pump primes and it cranks nicely. Any ideas?

    #2
    Sounds like it could be a "short" somewhere in a wiring harness. Tracing it down is the fun part!!


    "Hope and dignity are two things NO ONE can take away from you - you have to relinquish them on your own" Miamibob

    "NEVER trade your passion for glory"!! Sal "the Bard" (Dear Old Dad!)

    "Cars are for driving - PERIOD! I DON'T TEXT, TWEET OR TWERK!!!!"

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      #3
      Another note this only happens in the extreme cold like 0° or colder

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        #4
        load issue probably. cold battery will have lower voltage and it may be at the threshold for the ECM to figure stuff out and with the bower going, the ecm can't get enough juice. Just a theory.

        Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
        rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
        Originally posted by gadget73
        ... and it should all work like magic and unicorns and stuff.
        Originally posted by dmccaig
        Overhead, some poor bastards are flying in airplanes.

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