Mechanics

NO FUEL

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?
Avatar
Ap_ppp
November 15, 2010.



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.

JDL
Nov 15, 2010.
Not ecm B fuse, that load voltage comes from fusible link.

JDL
Nov 15, 2010.
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

Tiny
Ap_ppp
Nov 15, 2010.
Wheres my fusible link located?

Tiny
Ap_ppp
Nov 15, 2010.
Where is my oil pressure/ fuel pump sensor located? Could that have to do with problem?

Tiny
Ap_ppp
Nov 15, 2010.
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.

JDL
Nov 15, 2010.
What if its just completely dead of power there?

Tiny
Ap_ppp
Nov 15, 2010.
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.

JDL
Nov 15, 2010.
At the fusible link, if voltage on one side and not the other, get new fusible link.

JDL
Nov 15, 2010.
Is the fusible link near fuse box?

Tiny
Ap_ppp
Nov 15, 2010.
Page 1 of 2