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2001 Mercury Grand Marquis Question: What causes no crank.



dustint1, Forest Park, GA, March 28, 2014, 01:59

First code was for cylinder 3 bad plug or coil. Replaced both car ran good 20 miles. Next code bank 1 2 lean. Replaced duel filter old me stoped up. Cranked right up ran 10 miles. Cranks when wants, when it does runs good till warms up then rough idle, eventually will die. Have to wait 30 min will crank back up. Any ideas.

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  • Answer #1

    March 28, 2014, 04:54

    Bad cat or o2 sensor , if u utube that code they will show u how to
    Check out wave pattern of o2 sensor but need a scanner or take
    Gamble and replace that bottom sensor under cat,
    Further testing needed...

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  • Answer #2

    Greg's Orange Auto (15171 Answers) , Orange, CA - (714) 361-9386
    globalhelper March 28, 2014, 09:32

    seek help you are missing something

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