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No spark from coil ls1 engine

I have a 1998 trans am with no spark from any coil there is no signal from the computer to any coil

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  • Cars & Trucks Master
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Have you checked the computer for trouble codes ?
Do you get injector pulse ?

Posted on Jul 18, 2013

  • gerald raymer Jul 18, 2013

    no codes after repairing the coolant sensor wiring the injectors are workinf but not the coils

  •  Stephen
    Stephen Jul 18, 2013

    Well all of the coils get power from the same fuse, and each coil is grounded by the engine computer. If you are getting injector pulse I have to believe the crank and cam sensors are working. Other than the security system knocking out the coils, you may have a dead engine computer. And one of the coils could have fried it. Even so, you usually get a trouble code for it.

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