Starts but then shuts off

1999 CHEVROLET SUBURBAN
180,000 MILES • 5.3L • V8 • AUTOMATIC
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SPYNTRAK
  • MEMBER
  • 36 POSTS
Hi, I am helping a friend of mine on his SUV listed above LT. The problem is it starts and stays on for a couple of seconds then shuts off. He also mentioned that before this happened he noticed when going up a freeway or highway hill he would almost floor the gas pedal and notice it would sort of jerk real quick ounce and it takes its time to pick up speed. it wouldn't happen all the time only once in a while. Oh yeah we just changed the fuel filter and changed spark plugs. What could it be?
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Mar 15, 2020 at 9:06 PM
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MOTOR MASTER
  • ✓Experienced Mechanic
  • 279 POSTS
Hello my name is Dave.

You didn't mention if the check engine light was coming on when he was experiencing the low power issue. Even if the light wasn't coming on I would recommend checking the computer for any trouble codes. Here is a link to out tutorial on how to do that:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

If you could check for any codes that would be a huge help in diagnosing the problem, even if it doesn't have any codes that also helps us narrow down the problem. Please check for those codes and get back to us with the results. We look forward to hearing back from you and thank you for using 2CarPros
Mar 15, 2020 at 9:14 PM
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