No crank no start, they thought it was a starter problem?

KEVINSJ1313

MEMBER
1999 CHEVROLET BLAZER
4.3L
6 CYL
2WD
AUTOMATIC
100,000 MILES

But the starter is good. All fuses are good. I have power to the crank fuse and all ign fuses. I have power to the relay, and I tried a jumper on the relay from 28 to 30 I think that's the one I did but got nothing. What should I do now?

Friday, July 21st, 2023 AT 1:48 PM

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

Here is a wiring diagram of the starter circuit and a guide to show you how to test for power, go over the fuses and power leads to see where you lose power, it could be the ignition switch itself.

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

This guide can help as well:

https://www.2carpros.com/articles/starter-not-working-repair

Check out the images (below). Please let us know how it goes

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Saturday, July 22nd, 2023 AT 3:18 PM

KEVINSJ1313

MEMBER
18 POSTS

I have power at the crank fuse and all the ignition fuses to but it still doesn't start it doesn't engage the starter I can jump the starter with a screwdriver and it will engage the starter but will not turn it over I think It might be that the motor is locked up but it was running fine I Turned it off and it would not start back.

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Saturday, July 22nd, 2023 AT 4:05 PM

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

You say it cranks when you manually engage the starter, so the engine is okay. Will it crank in neutral? Does the crank fuse get power when the ignition switch is turned to the crank position?

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Sunday, July 23rd, 2023 AT 1:59 PM