Will not start

Tiny
DLTSTFY
  • MEMBER
  • 2003 OLDSMOBILE ALERO
  • 4 CYL
  • 118,000 MILES
Makes no sound when key is turned over. Security light not flashing and battery intact. All lights, radio and horn work. I reset fuse box and car will not start. No indication of any sound when key is turned.
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Friday, February 21st, 2020 AT 4:02 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

There are a few things that can cause this. A blown fuse, starter relay, wiring issue, starter itself, and so on.

With that, the first thing is to check the ignition fuse in the under hood fuse box. See pic 1

Next, check if the vehicle will start in neutral. (I'm assuming it's an automatic transmission) See pic 2 Also, here is a link that explains how to test a neutral safety switch:

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

Next, check if there is power to the smaller purple wire on the starter solenoid when the key is in the start position. See pic 3. If there is power in the start position and there heavy gauge wire from the battery to the starter is properly connected and the battery charged, replace the starter.

If there is no power, check the starter relay in the under hood fuse/relay box. See pics 4 and 5

As far as testing the relay, if there is another relay in the box with the same part number, switch them. If there isn't, the last link below shows how to check one. Other than testing it, you will need to get a new one or use a known good one.

_______________

Here are links to help with the testing and inspecting:

https://www.2carpros.com/articles/how-a-car-fuse-works

https://www.2carpros.com/articles/how-to-check-a-car-fuse

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

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

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

__________________________________________________

I realize this seems like a lot, but really won't take too long. If you need help or just have questions, let me know.

Take care,
Joe
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Friday, February 21st, 2020 AT 4:21 PM
Tiny
DLTSTFY
  • MEMBER
Dark outside now but I will be out early morning tomorrow following all your directives. I am so very appreciative of you. I will be back to let you know.
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Friday, February 21st, 2020 AT 4:57 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
You are very welcome. I will be at the shop working at 7, so I will watch for your reply later in the day.

Take care,
Joe
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Friday, February 21st, 2020 AT 5:00 PM

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