1997 Chevy Blazer fuel pump

Tiny
DENA70
  • MEMBER
  • 1997 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 132,000 MILES
I would like to know if I have a bad fuel pump because my blazer stalled out at a few red lights and there is a noise coming from the back.
Do you
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No
Tuesday, March 4th, 2008 AT 9:21 AM

3 Replies

Tiny
PEAR69
  • MEMBER
Fuel pumps are either good or bad. They work or they do not work--there is no in between. Sometimes they get weak, but almost always it is something like a blocked up fuel filter or a rotted fuel line sucking air in that causes the fuel pump to work harder and eventually fail. If your engine started up chances are it is not the fuel pump--check the other things I mentioned.
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Tuesday, March 4th, 2008 AT 9:38 AM
Tiny
ED ARMES
  • MEMBER
Fuel pumps make a noise but it is usually a low buzzing sound.
You can buy or better yet rent a fuel pressure tester at most auto parts stores. Pressure usually should run 40 to 45 pounds at fuel rail.
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Tuesday, March 4th, 2008 AT 10:01 AM
Tiny
PEAR69
  • MEMBER
For some reason your style fuel pump are usually loud--yes like a--low loud buzz. If the noise does not sound like s buzz or hum then it may be the exaust system vibrating in a hanger back by the fuel tank.

The fuel system on your vehicle DOES NOT have a fuel rail. It has a CPI system. There is a fuel pressure test port that looks like the stem on a tire. The pressure here should be between 60 and 66 PSI NOT between 40 and 45. If it is that low then the engine will almost not run. A CPI system needs a very high pressure to operate properly. Also, low fuel pressure usually means a blocked fuel filter or a rotted out gas line. Have your fuel system pressure checked.
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Thursday, March 6th, 2008 AT 11:11 PM

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