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No fuel

Tiny
AP_PPP
  • MEMBER
  • 1990 CHEVROLET TRUCK
  • V8
  • 4WD
  • AUTOMATIC
My power wire to my fuel pump has no power. Where does it lead to? Or whats my problem?
Monday, November 15th, 2010 AT 5:39 PM

11 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Check the fuel pump relay. There may also be an oil pressure switch in your fuel pump circuit. Load voltage for both may come from ecm B fuse. I'll have to check.
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Monday, November 15th, 2010 AT 5:43 PM
Tiny
JDL
  • MECHANIC
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Not ecm B fuse, that load voltage comes from fusible link.
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Monday, November 15th, 2010 AT 5:48 PM
Tiny
AP_PPP
  • MEMBER
  • 7 POSTS
Ok. Well I know that the gray power wire to the fuel pump has no power and I have followed it up to the back side of my fuse box on the other side of the fire wall
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Monday, November 15th, 2010 AT 5:50 PM
Tiny
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  • 7 POSTS
Wheres my fusible link located?
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Monday, November 15th, 2010 AT 5:52 PM
Tiny
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  • MEMBER
  • 7 POSTS
Where is my oil pressure/ fuel pump sensor located? Could that have to do with problem?
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Monday, November 15th, 2010 AT 5:58 PM
Tiny
JDL
  • MECHANIC
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Right side of firewall, battery junction block. There may also be an inline fuel pump fuse in that same location, close. My database is conflicting. As far as the fusible link, if you have voltage on both sides, the link should be ok.
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Monday, November 15th, 2010 AT 6:07 PM
Tiny
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  • MEMBER
  • 7 POSTS
What if its just completely dead of power there?
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Monday, November 15th, 2010 AT 6:08 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Check the inline fuse and fusible link. The o/p switch and fuel pump relay, as far as voltage to the pump, should work independent of each other. The o/p switch may be located close to oil filter, driver side of engine, down low.
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Monday, November 15th, 2010 AT 6:41 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
At the fusible link, if voltage on one side and not the other, get new fusible link.
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Monday, November 15th, 2010 AT 6:47 PM
Tiny
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  • 7 POSTS
Is the fusible link near fuse box?
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Monday, November 15th, 2010 AT 6:52 PM
Tiny
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Another question. Just put a new trany in whats correct way to adjust the kickdown
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Monday, November 15th, 2010 AT 7:15 PM

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