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Anonymous Posted on Apr 16, 2017

1998 chev 1500, 5.0, automatic trany. Why do I have to activate the starter relay by hand to get engine to start?

Will not start with key in start position. If I remove the cover of the starter relay and hand activate it, it will start with key in the on position. Changed the ignition switch and the neutral safty switch still will not start.

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Jeff Armer

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  • Cars & Trucks Master 15,575 Answers
  • Posted on Apr 16, 2017
Jeff Armer
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Have you used a different relay ? Look on the bottom of the relay ,see pin 86 ? Test for B+ voltage where it plugs into the relay / fuse box while someone turns the key to start ! Is there B+ voltage . Before replacing the ignition switch and the neutral safty switch did you test for battery voltage coming from the ignition switch ? Pin 85 goes to ground , you can check this with a ohm meter . Do you know how to use a DVOM - digital volt ohm meter ? In the start position voltage from the ignition switch goes through 10 amp crank fuse . Fuse #8 located in the I/P fuse box .

  • 2 more comments 
  • Anonymous Apr 18, 2017

    All fuses were good, also had B+ voltage, tried different relay. Im stumped. Thanks for your ideas.

  • Jeff Armer Apr 18, 2017

    https://www.youtube.com/watch?v=6eZg3wLY...

  • Jeff Armer Apr 18, 2017

    https://www.youtube.com/watch?v=Mru8BbTG...

  • Jeff Armer Apr 18, 2017

    Did you check the ground for the control side ? Try supplying a ground at Pin 85 . see if it will start then .

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