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1998 Chevy Blazer fuel pump

Tiny
MICHELEY
  • MEMBER
  • 1998 CHEVROLET BLAZER
Other Category problem
1998 Chevy Blazer Engine Size unknown 220000 miles

where do I check electrically if my pump is shot? I know there is a connection to check but I don't know where?
Saturday, December 15th, 2007 AT 3:17 PM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Attach a pressure gauge to the fuel rail schreader valve, it looks like a bicycle tire valve, Turn the key on you should hear the pump run for 2 secs, cycle ignition switch several times to get best reading, SEFI should have 56-62 PSI on the gauge.
If you have a volt meter and the pump does not run for 2 secs with key on, test the gray wire at the connector at the pump, Should read battery voltage.


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https://www.2carpros.com/forum/automotive_pictures/62217_Wire_Colors1_1.jpg

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Sunday, December 16th, 2007 AT 6:28 AM

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