Car will not stay running

Tiny
EDLAPENOTIERE
  • MEMBER
  • 2005 CHEVROLET MALIBU
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 105,805 MILES
My car will turn over but wont fire up. I changed the spark plugs and it has spark, the battery is good. I have almost a full tank of gas and you can hear the fuel pump kick in. The fuel pump fuse are good. The car will turn over but just wont stay running. Only for a second when you spray starter fluid In the intake. I just don't know what it could be.
Saturday, March 23rd, 2019 AT 10:25 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,640 POSTS
Welcome to 2CarPros.

If it runs for a couple seconds with starting fluid and then stalls, you are not getting fuel to the engine. Although you hear the pump running, you really need to confirm fuel pressure. Also, check to see if there is an injector pulse to the injectors.

Here are a couple links that will help:

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

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Here are the manufacturer's specs for fuel pressure:

Fuel Pressure (Key ON, Engine OFF) .................... 384-425 kPa (50-60 psi)

Also, you will need to use some general test equipment for checking injectors. Here are a few links that may help:

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

Additionally, you will need a fuel pressure gauge to check pressure. If you don't have one, most parts stores will lend or rent one to you and then return your deposit when you return the tool.

Do these things and let me know the results so I can further help you diagnose the issue.

Take care,
Joe
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Saturday, March 23rd, 2019 AT 11:08 PM
Tiny
HARRY P
  • MECHANIC
  • 2,292 POSTS
Is the security light on the dashboard staying on or flashing?
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Sunday, March 24th, 2019 AT 5:04 AM
Tiny
EDLAPENOTIERE
  • MEMBER
  • 2 POSTS
No it's not on at all, and everyone keeps saying it's the anti theft. But will the engine even fire up with the anti theft?
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Sunday, March 24th, 2019 AT 5:04 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,640 POSTS
Welcome back:

If the light is on, it shouldn't start. So, since you said it has spark, I need you to check both the fuel pump pressure and the injectors for a pulse.

Here is a link that shows how to check for an injector pulse:

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Here is a link that shows in general how to test fuel pressure. Although you hear the pump, it may not be producing enough pressure to keep the engine running.

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

If you refer back to my original response, it shows links that explain how to use the general electrical equipment needed to test the injectors.

Here are the specifications for the fuel pressure:

Fuel Pressure (Key ON, Engine OFF) .................... 384-425 kPa (50-60 psi)

Most parts stores will lend you a fuel pressure gauge to test your vehicle. Since it starts for a second with starting fluid, the problem is fuel related.

Let me know what you find.

Joe
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Monday, March 25th, 2019 AT 5:43 PM
Tiny
HARRY P
  • MECHANIC
  • 2,292 POSTS
Okay, it's likely not the security system. As Joe suggests, check fuel pressure and injector pulse. I'm going to leave it to him as he has it under control. Thanks for using 2CarPros and good luck.
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Tuesday, March 26th, 2019 AT 4:40 AM

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