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Thread: Stuck!

  1. #1
    New Member
    Join Date
    Jun 2018
    My Ride
    Harley-Davidson dyna lowrider
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    Stuck!

    hi,need help!bike is 2007 dyna lowrider, ok,after engine was warm the bike developed a slight misfire on the rear cylinder,which gradually got worse( now misfires from startup)checked the obvious,coil,plugs battery,all ok, very weak spark at rear cylinder,the error code is,p1355 rear ignition coil driver high/shorted.any help much appreciated.I live in N.Ireland,so Harley shops very few and far between. Paul

  2. #2
    Senior Member
    Join Date
    Feb 2018
    Location
    Plymouth
    My Ride
    2016 Iron 883
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    258
    Thanked: 106
    The ignition coil on a Harley Davidson motorcycle is an essential component of the ignition system. It consists generally of two sets of wires that are wrapped around an iron core. This component comes sealed, and is not a repairable item. Fortunately, testing is relatively straight forward, requiring a pair of resistance measurements made at the connection terminals on the coil.


    Disconnect, by hand, the two spark plug wires from the coil. Unscrew the smaller connections on the coil with an SAE wrench.
    Set the ohmmeter to read resistance on the "Rx1" setting. Measure the resistance across the two smaller terminals on the coil. The meter should read between 2.5 and 3.1 ohms.
    Set the ohmmeter to read resistance on the "Rx1000" setting. Measure the resistance across the two larger terminals on the coil. The ohmmeter should read between 10,000 and 12,500 ohms.
    If the meter reads outside of the ranges for either of the above measurements, then the coil is faulty and should be replaced.

    Sometimes a coil will only give a faulty reading when it is hot from riding. In this instance, it may be necessary to allow the coil to heat up before performing a resistance measurement. Exercise extreme caution when working around a hot motorcycle.

  3. The Following User Says Thank You to Johnnythefox For This Useful Post:

    buzzard (06-05-2018)

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