FI fuel and wiring routing |
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FI fuel and wiring routing |
watsonrx13 |
Jul 21 2008, 06:20 AM
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#1
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Advanced Member Group: Members Posts: 2,734 Joined: 18-February 03 From: Plant City, FL Member No.: 312 Region Association: South East States |
I've put my engine back in the car and want to confirm the FI fuel routing. I've looked at PP/Dave Darling's diagrams, but would like confirmation:
1. large (9mm) plastic fuel line from firewall connected to fuel filter 2. fuel filter connected to fuel pump at (S-suction) connection 3. (D-damper) connection on fuel pump connected to fuel rail on passenger side, rear connection 4. (R-return) connecton on fuel pump to Y connection 5. Y connection to small (7mm) plastic fuel line from firewall 6. Y connection to fuel pressure regulator 7. fuel rail on passenger side, front connection, to fuel rail on driver side, front connection 8. fuel rail on driver side, rear connection, to fuel pressure regulator 9. fuel rail on driver side, middle connection, to cold start valve. Also, I'd like confirmation on the electrical connection to the fuel pump: 1. black/red wire to the + side of fuel pump 2. brown wire to the - side of the fuel pump If I wanted to test the fuel pump outside of the car, I should be able to connect a positive wire to the + of the fuel pump, then to the + side of a battery, then - fuel pump to - battery. I could then connect the (S) fuel line and place in a container of gasoline. Then place the (D) and (-R-) fuel lines into an empty container. When I connect up the electrical lines, I should get the pump to hum and run fuel through the pump. Also, if I turn on the ignition, I should be able to get voltage across the black/red wire and the brown wire, correct? Finally, has anyone successfully found a shop that can rebuild these fuel pumps? -- Rob |
swl |
Jul 22 2008, 10:09 PM
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#2
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Senior Member Group: Members Posts: 1,409 Joined: 7-August 05 From: Kingston,On,Canada Member No.: 4,550 Region Association: Canada |
Tab914 was the guy who discovered the brushes problem. I'm on the road and the hotel gateway is really fracking with my browser - can't give you a direct link but the thread is called 'fuel pump issues, no power to pump'
I've been searching for the thread with the relay board diagram but am getting frustrated by this browser thing. So I'll try from memory (dangerous!) 1 lift the power to your coil during testing to guard against welding your points. 2. key on 3. with volt meter measure from ground to each side of the fuse. Should be 12-13V on both sides. 4. if power to the fuse is good then uplug the 4 pin connector on the back left of the relay board. Use a jumper to ground pin 3 on the relay board to ground. This should turn on the pump but most likely won't 5 if the jumper failed to start the pump then we are probably looking at one of the two relays - main power or fuel pump. replace both with known good relays (headlight motors are a good source). If none of that points to the problem then I need my diagram to take your farther. Background. The main power relay turns on with switched power from the key. It then provides power to the solenoid of the fuel pump relay. The ecu then turns on a 'switch' to ground to activate that solenoid. When the solenoid makes it switches power that comes from the battery through the fuse, through the relay contacts and onward to the pump. Jumping pin 3 is basicly doing the job that the ECU does. |
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