Truck isn't getting any spark possible bad ignition switch (not tumbler)

SPARKYGIZMO

MEMBER
1994 CHEVROLET SILVERADO
5.7L
V8
4WD
AUTOMATIC
161,000 MILES

I think my ignition switch is bad because its not sending spark to the ignition coil. But the truck still turns over and fuel still gets to the throttle body I have replaced the whole entire distributor, also the icv and map senor.

Thursday, August 25th, 2016 AT 6:02 PM

7 Replies

TWYSTED696

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2 POSTS

Have you tested the ignition switch with a volt meter to check your theory

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Thursday, August 25th, 2016 AT 6:08 PM

SPARKYGIZMO

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Yes zero

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Thursday, August 25th, 2016 AT 6:09 PM

TWYSTED696

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2 POSTS

Did you make sure your battery is plugged in?

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Thursday, August 25th, 2016 AT 6:13 PM

SPARKYGIZMO

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Yes.

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Thursday, August 25th, 2016 AT 6:17 PM

SATURNTECH9

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https://www.2carpros.com/articles/how-to-test-an-ignition-system
I posted a article to help you step by step let me know what you find and we will go from there.

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Thursday, August 25th, 2016 AT 6:41 PM

SPARKYGIZMO

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4 POSTS

Saturntech I have only one "coil pact" I have a ignition coil

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Thursday, August 25th, 2016 AT 6:44 PM

SATURNTECH9

MECHANIC
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With the key in the run position use a volt meter ground the black lead to the engine. Then hook the red lead to the b terminal connector going to the coil you should see battery voltage. Also unplug your pick up coil and measure the resistance of it should be 500-1500 ohms.

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Thursday, August 25th, 2016 AT 8:54 PM