What was the fuel pump voltage in 1993?
1993 Fuel Pump Circuit Tests (GM 4.3L, 5.0L, 5.7L). Should have 10 to 12 Volts DC with Key On Engine Cranking or Key On Engine Running (KOER). This voltage comes from the GRY inline fusible link located in the engine compartment junction block.
What is the fuel pump relay wiring diagram?
Fuel 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).
How are fuel pumps different from fuel sending units?
In-line pumps sit outside the tank but near it and usually below it, and provide a low-pressure flow of fuel to keep the carburetor’s reservoir full. A fuel sending unit doesn’t “send fuel” as its name implies; it sends an electrical signal from the fuel level sensor to the fuel gauge.
How can I see the current pulse of a fuel pump?
Go to the drop-down menu bar at the lower left corner of the Waveform Library window and select Fuel pump current. If you zoom in on the waveform you can see the pump waveform in even more detail. It shows a current pulse for each sector of the commutator. The majority of fuel pumps have 6 to 8 sectors.
1993 Fuel Pump Circuit Tests (GM 4.3L, 5.0L, 5.7L). Should have 10 to 12 Volts DC with Key On Engine Cranking or Key On Engine Running (KOER). This voltage comes from the GRY inline fusible link located in the engine compartment junction block.
Fuel 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).
What causes a fuel sending unit to wear out?
Your fuel sending unit is a fuel level sensor inside your gas tank that measures the amount of fuel in the tank. The sending unit is submerged in fuel, which can cause it to wear out over time. Corrosion, wiring problems, and wear and tear can all damage a fuel sending unit.
What should DC voltage be for fuel pump?
The alldata instructions say the fuel pump resistance between connectors 4 and 5 (furthest to the right) should be between .2 ohms and 3. I’m getting 2.6. The dc voltage from the power connector that supplies the fuel pump is 5.3. Thats with the fuel pump jumped as suggested above. 5 .3 with pump connected or disconnected? Here’s the full story.