On first start up engine shuts off

Tiny
DELLUNAA@GMAIL.COM
  • MEMBER
  • 2004 DODGE RAM
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 153,000 MILES
On first start up engine starts then shuts off within one to two seconds. Then it will start and run good.
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Monday, February 11th, 2019 AT 8:41 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi and thanks for using 2CarPros.

Based on your description, it sounds like there is an issue with what is called fuel pressure drop off. I want you to try this little trick on first start up.

1) Turn the key from off to the run position (not start) and count to three.

2) Turn the key off.

Repeat the steps three times and on the last time, see if it starts and stays running. If it does, it is a fuel pressure issue and I would recommend checking pressure and drop off.

Here is a link that shows how to check fuel pressure in general:

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

For directions specific to your vehicle, see pictures 1 and 2. Also, here are the manufacturer's specifications for pressure.

Fuel System Pressure .................... 400 34 kPa (58 2 psi)

Let me know what you find or if you have other questions.

Take care,
Joe
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Monday, February 11th, 2019 AT 5:10 PM
Tiny
DELLUNAA@GMAIL.COM
  • MEMBER
Hello Joe,

10174218/r/2515277
Thanks so much for your trick.
It has been a month now and the truck starts on the first try every time since I did your trick. We do not use the truck everyday, but we have been using it as per normal and there has not been a time I have had to try twice to start it. So it seems your trick worked well.I have not proceeded with the Fuel System Tests that you sent along, as it is working well now. (Hope I do not jinx it by writing you.)

Thank you,
James Felland
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Monday, March 11th, 2019 AT 2:44 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome back, James.

Don't worry, you should be fine. The problem is fuel pressure drop off. The system is to maintain a specific amount of pressure so the pump can start the engine right away. Often times, components start getting older and allow the pressure to drop. The result is what you were experiencing. It took a bit to build the pressure needed to run the engine.

I'm glad it's working for you. When you decide to determine the cause, I'll be here, so feel free to come back with any questions.

Take care,

Joe
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Monday, March 11th, 2019 AT 4:01 PM

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