Engine will not crank over?

Tiny
JER972
  • MEMBER
  • 1998 CHEVROLET ASTRO
Changed starter, battery, van will still not start why? How do I repair?"
Saturday, March 19th, 2011 AT 10:04 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

Just so that we cover all the possibilities, have you tried to jump start the vehicle?
When you turn the key does it make any noise?
Can you hear the starter clicking? what about any other noise?

If the battery is good, then you would have a issue with either the starter, starter relay or ignition switch. Any of these items can keep the vehicle from cranking over and starting.

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

Firs you want the check the starter relay. It is located in the fuse block under the hood (see attached diagram below).
That relay can be tested. Please refer to this article on how to test relays:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit
https://www.2carpros.com/articles/how-to-use-a-voltmeter
https://www.2carpros.com/articles/car-cranks-but-wont-start

First make sure you are getting spark to the plugs.

Then check fuel pump. If you can't hear the pump come on check the relay then test the pressure to verify.
With the key on and engine off you should have 30-55 PSI of fuel pressure.

Here is a helpful guide on how to test fuel pressure:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
https://www.2carpros.com/articles/how-a-fuel-pump-works

You can also test the relay. The relay is located under the hood in the fuse block.

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

I have attached the diagrams for your reference.

Please let me know of any questions.

Thank you.
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Tuesday, August 3rd, 2021 AT 8:02 AM

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