sometimes you have to turn the key a l97 tot

sometimes when you start my taurus  you turn the key and nothing, not a sound just dead, then after you turn the key a few times its ok and starts, sometimes you turn the key and you get a click from the starter just a clik, sometimes it starts to turn over but dont. 97 out of 100 times its fine. help i have replaced the neutral switch, battery cables, starter. im lost and i     just want to cry. help. help

Is this a 3.0 4V or SHO?  If so, did you check the starter relay.. Be sure to check for good connection/grounds, and here's the starting system schematics to help in pin point tests and look for circuit drop outs.. 


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regular siz clylender taurus mechanic says he checked starter relay.

turned out to be a bad battery, bad shorted internalls...
 

Thanks for the update.. Glad it was a simple fix...