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1997 Chevy Blazer losing power/not getting fuel.

Tiny
RICKRAINS
  • MEMBER
  • 1997 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 177,000 MILES
After driving 25 miles or so, vehicle starts losing power like it is starving for fuel, (ok at idel). I can shut veh off and start it back up and drive for another 10 miles(runs great) then it starts to lose power again. Longer you drive it the more it does this. Have replaced fuel pump (no help). Have been told it could be the fuel relay switch and it could be the fuel pressure regulator. Any suggestions?
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Sunday, May 25th, 2008 AT 12:29 AM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What you need to do is check the fuel pressure to rule out the regulator and pump. Also test the fuel pump relay
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Sunday, May 25th, 2008 AT 4:46 AM
Tiny
RICKRAINS
  • MEMBER
  • 4 POSTS
How do you check the fuel pump relay switch and what is the proper reading for the fuel pump and fuel regulator?

Thanks again.
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Monday, May 26th, 2008 AT 10:12 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
When you turn key to run -Do you hear the fuel pump come On for 2 secs before it shuts off.

The fuel pump pressure should be 60-66psi
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Monday, May 26th, 2008 AT 2:58 PM
Tiny
OBXAUTOMEDIC
  • MECHANIC
  • 3,711 POSTS
When was the Fuel Filter last changed?
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Monday, May 26th, 2008 AT 7:32 PM

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