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warrenoliver |
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#1
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Member ![]() ![]() Group: Members Posts: 363 Joined: 11-November 06 From: McFarland, Wisconsin Member No.: 7,199 Region Association: Upper MidWest ![]() |
Car stalled on me this morning. When I tried to restart, the fuel pump would not turn on so no luck with the start. Towed it home and checked it out. It is a 73 2.0 with FI.
The pump runs when I jumper directly to the battery. I have continuity from pump connector to the #13 pin on the relay board. If I jumper from the fuse to the #13 pin, the pump comes on. The fuse is good. I have replaced the main power relay and the fuel pump relay with known good ones. With the ignition on, when I remove and reseat the main power relay, I can feel the relay click but I do not hear the injectors click nor do I hear the fuel pump start (I got this test from Dr. 914's Tech Tips). On the fuel pump relay socket, I have power at the 30 pin and also the 85 pin. When I jumper to the 87, it does not turn on the fuel pump. I don't know if it is related, but I have the same problem with the heater blower relay also. I jumpered 30 to 87 and I do not have power. I am not sure but I think the car died when I had the heater blower running. I'm stumped. What do I check next? |
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Tom |
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#2
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None ![]() |
Jumpering pin 87 of the fuel pump relay is the same as jumpering pin 13 of the 14 pin connector to power. You say pin 13 to power makes the fuel pump work. Try jumpering the fuse to pin 87 of FP relay. Pump should come on. If not, you have a problem with the fuel pump relay socket to relay board traces. Try cleaning the fuel pump socket with a small wire brush or rolled up fine sandpaper.
Here is a different pic of the relay board. Tom Attached thumbnail(s) ![]() |
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