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craig
craig 8/22/2012
1987 Dodge Diplomat SE 8Cyl5.2L - Engine
I have An 87 Dodge Diplomat with NO spark .I have power at coil but NO spark. If Car has a balast resistor ,I can't find
Tried- Coil ,cap ,rotor ,computer
1 Answer
  • jdl
    jdl 8/22/2012
    Use a testlite on negative side of coil, engine cranking, It should pulse. If no pulse, problem with ground side of coil. The ground usually pulses on and off. My wiring info for your model year is very limited, I can't track the ground circuit for the coil. Any applicable trouble codes?
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    jdl
    craig 8/22/2012
    tried testlite ,no pulse. the - side goes to ECM the printed part of repair man says to check balast resistor, but wiring diagram doesn't show one. also coil pick-up shows 292 ohms.
    jdl
    jdl 8/23/2012
    But there is voltage on the ground side? What little wiring I could find on your model year, didn't show a ballist resister either. I looked at an online parts-book, It didn't show ballast resister part for that model year, rockauto.com.
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