What will cause b3000 to not want to take the gas going up a hill , will idling in the yard it's fine

1999 MAZDA B3000
164,000 MILES
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LIVINGSTON38
  • MEMBER
  • 11 POSTS
When you start driving the truck it does fine for about a minute , then it acts like it want take the gas about to shut off , but when I turn the truck off and start it back up it runs again for about a minute then the same thing . Also the fuel pump stays on making a whining noise

Jun 5, 2012 at 6:38 AM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
That could mean the fuel pump is failing. Have the fuel pressure tested.
Jun 5, 2012 at 7:52 AM
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