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Stalling problem

Tiny
ROY KAREN CHIQUITO
  • MEMBER
  • 2002 CHEVROLET AVALANCHE
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 167,000 MILES
My truck starts up good, but when it warms up it shuts off. No check engine light turns on and no bad idling. It just shuts off sometimes. It will start right up, but sometimes it has to sit for a bit to start again.

All that has been done changed throttle body sensor, crank sensor, cleaned mass airflow sensor, spark plugs, air filter.

Replaced fuel filter and checked fuel pressure was between forty nine to fifty.

can you all help? Please!
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Wednesday, February 1st, 2017 AT 10:17 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,833 POSTS
Hey Roy,

this sound like a classic fuel pump that is going out, even though it has the right pressure when you test it the pump will fail and than start right back up. big problem with those trucks. This guide will give you an idea on what you are in for when replacing the pump.

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

Please let us know what happens so it will help others

Best, Ken

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Monday, February 6th, 2017 AT 2:09 AM

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