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Part 1
Fuel Pump Relay Wiring Diagram (Automatic Transmission Only) NOTE: The wiring diagram illustrations in this article cover only: 1993 4.3L, 5.0L, and 5.7L GMC/Chevrolet pickups with the 4L60-E automatic transmission.For the 1994 fuel pump wiring diagram, check out the following article: 1994 Fuel Pump Circuit Tests (GM 4.3L, 5.0L, 5.7L).
91 k1500 5.7 TBI no power to the fuel pump relay | Pirate 4x4I turn the key I get nothing at the relay, the orange or red are flat as a board! pump only runs if I jump the grey wire from the battery but still doesnt shoot nothing out of the TBI (But did 2 days ago and plenty of gas was flowing when it ran with the jumped pump) before I could figure out what the original problem was --which is no power to the fuel pump relay ,,now I have that and no fuel ...
Part 1Fuel Pump Relay Wiring Diagram (Automatic Trans. Only) NOTE: The illlustrations and info in this page apply only to 1994 Chevrolet/GMC pickups with a 4.3L, 5.0L or a 5.7L engine. For the 1993 fuel pump wiring diagram, check out the following article: 1993 Fuel Pump Circuit Tests (GM 4.3L, 5.0L, 5.7L).
TBI Connversion wiring and diagrams!Here's a list of the pins but they are also on the wiring diagrams above. A1- grn/wht- this wire is used to energize the fuel pump relay. A2- not used A3- not used A4- gry- to EGR relay.(optional) This is a ground from the ECM to control the EGR relay. A5- brn/wht- SES(service eng soon) light. This is a ground to turn on the light.
Electric Fuel Pump Relay Wiring Diagram | Free Wiring DiagramVariety of electric fuel pump relay wiring diagram. A wiring diagram is a simplified standard photographic depiction of an electrical circuit. It shows the elements of the circuit as streamlined shapes, and the power as well as signal links in between the gadgets.
1993 GMC K1500 Fuel Pump Relay BypassI pulled the 4.3 V6 out of this $500 truck and put in a completely rebuilt 5.7 V8. Picked up a TBI (46mm TBI Kit, 55lb Injectors, 18lb Spring), put in a brand new Delphi FE0114 fuel pump to ...
Chevy/GMC how to test for a bad fuel pump tbi88-98 Chevy/GMC 1500/2500/silverado pickup truck Fuel pump - Tipped bed method - Duration: 33:24. Mike Balroop 158,080 views
85Fuel Pump The ECM sends a signal to the Fuel Pump Relay to turn on the fuel pump. The GRAY wire labeled "Fuel pump Feed+" must be connected to the positive fuel pump power wire to energize the fuel pump. A typical TBI pump pressure must be able to maintain 15 to 18 PSI.
fuel pump wiring diagram?The pump can be activated either by the fuel pump relay (next to the junction block), or by the oil pressure switch (next to the distributor). Try unplugging the connector from the relay and switch, I'll bet one of them will stop the pump. This is from my 1992 manual, but a 94 TBI should be the same.
Help diagnosing 87 TBI fuel pump problemThe fuel pump relay is wired in parallel with the oil pressure switch located adjacent to the distributor. The oil pressure switch is a redundant, fail-safe backup should the relay fail. TBI_Noid_Light.jpg (2.96 kB, 204x204 - viewed 855 times.)