No spark

Asked by Big_rick97 Jan 22, 2019 at 03:45 PM about the 1995 Chevrolet C/K 1500 Silverado LB 4WD

Question type: Maintenance & Repair

I have a 95 Chevy Silverado 5.7 I have changed all
plugs and wires new cap and rotor button new
ignition coil but there is no spark to the ignition coil

2 Answers

2,570

If you have a test light put your ignition in the on position and hook the test light to battery positive, unhook the 2 pin connector on the ignition control module that has a side by itself, should say P and N, use the test light and touch on and off the P pin and the coil should fire.. if it does replace the distributor pickup, if not have the ignition module replace after verifying power and ground

2 people found this helpful.
2,570

This truck only has one input which is the camshaft(distributor pickup).. it doesnt use to two inputs because it only has 1 ignition coil and 2 injectors and it group fires them with every coil pulse, theres 8 notches on the distributor pickup that feed an ac sine wave into the ignition modules P/N pins which get converted to a digital on/off signal that can be used to control the coil negative

2 people found this helpful.

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