Starter not engaging

Tiny
B1GDAWG
  • MEMBER
  • 1980 CHEVROLET TRUCK
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 77,000 MILES
Neutral safety switch, will it prevent starter from engaging?
Sunday, May 10th, 2020 AT 11:27 AM

4 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

The power goes from the ignition switch to the neutral safety switch and then to the starter solenoid S terminal.

https://www.2carpros.com/articles/how-a-neutral-safety-switch-works

It should be a purple wire at the solenoid that should have power in the start position only.

https://www.2carpros.com/articles/how-to-check-wiring

It is located at the bottom of the steering column. I attached a picture for you.

Roy

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Sunday, May 10th, 2020 AT 12:08 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,443 POSTS
Yes it will. It should only allow the starter to operate in Park and Neutral. If it goes bad it can do two things, fail where it only works in one or the other or fail completely and not let the starter operate at all. It is locate down on the steering column and has the neutral switch and reverse light switch in it. Replacement is to disconnect the battery negative. Then go to the switch and remove the wiring connectors. Next there are two screws that hold the switch in place. Remove them. Remove the switch. If yours has the retainer strap on it keep that to install on the replacement switch. Now block the tires and shift the transmission into neutral. Install the new switch and use a.0980 pin or #40 drill bit as a pin to position the switch at neutral for installation. Tighten the screws, remove the pin drill. Now shift into park. Shift back into neutral and test to see if a.080 drill (#47 drill bit is close) will insert into the test hole. Connect the wiring, Connect the battery. Now test to see if the engine only starts in neutral and park.
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Sunday, May 10th, 2020 AT 12:08 PM
Tiny
B1GDAWG
  • MEMBER
  • 2 POSTS
Thank you it started, much appreciated.
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Friday, May 15th, 2020 AT 2:54 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good job. Glad to hear it.

We are always glad to help.

Roy
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Friday, May 15th, 2020 AT 3:19 PM

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