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1996 Toyota 4Runner Question: I've had misfire on #4 cylinder after eliminated plugs, wires and the coil pack

 

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Repairdad, 3.4L V6, Johnstown, PA, October 14, 2013, 05:48
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Although the coil pack is new, it only fires #1. No current passes through the new wire at all for #4. I tested it using a timing light which lights up on all the other wires but will not light at all on the #4 wire. I've been advised that a bad crankshaft position sensor could cause it or, the igniter control module.

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