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1994 Ford Explorer Question: my 1994 explorer with a 4.0 motor sometimes runs on 5 cyl and sometimes on 6cyl

 

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reclaimer, Foxboro, WI, January 19, 2012, 20:02
 Rookie

have changed plugs, plug wires,fuel filter,injectors,lower intake gasgets,coil seems to be good,when it runs on 6 cyl, runs good then will start running on 5 cyl,and sometimes back and forth, any ideas

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    Greg's Orange Auto (14224 Answers) , Orange, CA - (714) 361-9386
    globalhelper January 20, 2012, 06:15
     Master

    how many miles on car and how is your wiring to coils? word has a wiggle test for wiring harness problems. so try to duplicate the misfire by wiggling diff wire harnesses. its intermitant so you may have a corrided wire or connector

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