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Starts then shuts off

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
When it dies, you need to check for spark and fuel pressure so we can figure out what it is. What you describe sounds like a fuel pump, but we need to be sure, that is an expensive part to just throw at it.
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Tuesday, February 19th, 2019 AT 11:01 AM (Merged)
Tiny
KLTURPIN
  • MEMBER
  • 2 POSTS
  • 1999 CHEVROLET TAHOE
  • V8
  • 4WD
  • AUTOMATIC
Chevy Tahoe starts up fine then dies after 1 second
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Tuesday, February 19th, 2019 AT 11:01 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the fuel pressure with a fuel pressure tester if its within specifications
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Tuesday, February 19th, 2019 AT 11:01 AM (Merged)
Tiny
KLTURPIN
  • MEMBER
  • 2 POSTS
And if it is out of specs or in specs what then?
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Tuesday, February 19th, 2019 AT 11:01 AM (Merged)
Tiny
SUPERCRAZY
  • MEMBER
  • 2 POSTS
  • 1999 CHEVROLET TAHOE
  • V8
  • 2WD
  • AUTOMATIC
Engine cranks up and then stalls I have 55psi on fuel pressure and I can pour fuel down the trottle body and it stays running
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Tuesday, February 19th, 2019 AT 11:01 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Your fuel pressure should be 60-66psi yours is on the low side-and also Check if the injectors are pulsing
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Tuesday, February 19th, 2019 AT 11:01 AM (Merged)
Tiny
SUPERCRAZY
  • MEMBER
  • 2 POSTS
My fuel pressure is 60 and my injectors are pulsing
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Tuesday, February 19th, 2019 AT 11:01 AM (Merged)
Tiny
MMULLEN
  • MEMBER
  • 1 POST
  • 1999 CHEVROLET TAHOE
  • V8
  • 2WD
  • AUTOMATIC
  • 164,000 MILES
Truck had been dieing while idling, while driving 70 mph on freeway, or just driving through neighborhood, but will always start back up sometimes instantlly some times about ten min. Later. Codes showed a few different things it could be did a few test and found the following problems that are all now fixed. Changed spider fuel assembley, fuel pressure reg, EGR, O2 sensors, plugs, wires, distributer cap, runs great but still dieing. Running out of options, frustrated and need some help. Would make a donation, but this money pit in my driveway has left my pockets pretty bare.
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Tuesday, February 19th, 2019 AT 11:01 AM (Merged)
Tiny
JESSNDARYLE
  • MEMBER
  • 2 POSTS
Had about the same problem try cleaning your trottle body. I used mass air flow sensor cleaner (its what I had) you can use alcohol just make sure its dry before you put it back together. Make sure your air filter is clean to.
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Tuesday, February 19th, 2019 AT 11:01 AM (Merged)
Tiny
PEAR69
  • MECHANIC
  • 1,482 POSTS
What were the codes that were present before you replaced everything? Have you checked the TPS (throttle position sensor) - IACV (idle air control valve) IATS (intake air temperature sensor) - CTS (coolant tempertaure sensor) What is the fuel pressure? Have the ignition module and the coil tested. Autozone or a place like that will do this for free.
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Tuesday, February 19th, 2019 AT 11:01 AM (Merged)
Tiny
JOSEPHDADKINS
  • MEMBER
  • 8 POSTS
  • 1999 CHEVROLET TAHOE
Engine Performance problem
1999 Chevy Tahoe V8 Four Wheel Drive Automatic

I found TDC, Installeed cap, Marks match #1. Starts ruff, almost stalls, engine smooth at high rpm, put in gear, wont move?. I have it floored but won't get any higher then 1500 rpm.
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Tuesday, February 19th, 2019 AT 11:01 AM (Merged)
Tiny
PEAR69
  • MECHANIC
  • 1,482 POSTS
Take the tahoe to the dealer to have it timed.
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Tuesday, February 19th, 2019 AT 11:01 AM (Merged)
Tiny
JAQUAN29
  • MEMBER
  • 2 POSTS
1999 Chevy Tahoe starts but stalls. Any suggestions on what could be problem?
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Wednesday, June 10th, 2020 AT 6:42 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,644 POSTS
Hi,

There could be a couple things causing this. I hate to ask this, but I need you to start a new thread. Simply copy and paste your question as a new question. Someone will answer it promptly. We are asking this simply because we are trying to keep all threads specific to one topic. I hope you understand.

Joe
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Wednesday, June 10th, 2020 AT 8:43 AM

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