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Fuel pump fuse

Tiny
WJ2280
  • MEMBER
  • 2000 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
Where is the "fuel pump fuse" location?
Wednesday, March 24th, 2010 AT 1:15 AM

7 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Its the ECM B fuse 20 amp in the under hood fuse block that powers the fuel pump thru the fuel pump relay. Here is a guide to help test it with the fuse locations as well in the diagrams below.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Wednesday, March 24th, 2010 AT 1:32 AM
Tiny
OSCODAPAT
  • MEMBER
  • 4 POSTS
  • 1998 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 151,480 MILES
I can not find a fuse for the fuel pump on the fuse center in the car or under the hood. Where is the fuel pump test connector?
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Tuesday, July 16th, 2019 AT 12:50 PM (Merged)
Tiny
OBXAUTOMEDIC
  • MECHANIC
  • 3,711 POSTS
Hello,

You are looking for a relay not a fuse. It looks like this however there are probably several that look the same.


https://www.2carpros.com/forum/automotive_pictures/188069_98blzrfuelpumprelay_1.jpg



Once you find the fuel pump relay you can jump the relay and see if pump turns on. Sorry I don't have pic of relays exact location.
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Tuesday, July 16th, 2019 AT 12:50 PM (Merged)
Tiny
KINGBOBBY
  • MEMBER
  • 1 POST
  • 1997 CHEVROLET BLAZER
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 38,000 MILES
CHeck engine light on/off for weeks. Replaced o2 sensor 3 times. Pulled fuel pump fuse out, put back in. Truck now starts. Mechanic says it will take some time to figure out what might be really wrong. Can fuel pump overheat, stop working for a while, then restart? Fuse contacts old? Fuel pump relay the problem?

Any other ideas would be great
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Tuesday, July 16th, 2019 AT 12:50 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Fuel pump could be failing -check the fuel pressure to rule it out and also test the fuel pump relay and the fuel pump and oil pressure sending unit.
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Tuesday, July 16th, 2019 AT 12:50 PM (Merged)
Tiny
DREWGOAT
  • MEMBER
  • 1 POST
  • 1998 CHEVROLET BLAZER
  • V8
  • 4WD
  • AUTOMATIC
  • 107,000 MILES
My wife was driving and it was very low on fuel. She says on fumes. She stopped and put gas in it and the truck will now not start. I out a new fuel pump in earlier this year. Is it possible it burned out that quick and easy. Is there a fuse or something else I can check. Thank you. Bill
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Tuesday, July 16th, 2019 AT 12:50 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
First need to get fuel pressure built back into the system to get the air out. Do this by cycling the key ON (no crank) and OFF several times. Then attempt to crank. If this doesn't work then check the fuel pump relay.
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Tuesday, July 16th, 2019 AT 12:50 PM (Merged)

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