S2000 Under The Hood S2000 Technical and Mechanical discussions.

Fuel pump stopped working

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Old Sep 19, 2014 | 10:33 AM
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RZA
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Default Fuel pump stopped working

So here my problem. My fuel pump all of a sudden stopped working two weeks ago. I thought it was the relay because I had a friend listen and he heard no click okay the relay by the pump. It's a walbro 450 e85 wired to the battery. Ordered a new relay and out it on expecting it to work. No dice. So I made sure the connection was good on the battery and it was. I followed the wires from the battery to the ecu to everywhere it goes and everything is connected but still no power. I checked the ground that's right next to the pump and it's fine. I can't think of what to do and I'm losing my mind. My next option is getting 1500 dollars and flat bed hauling it to a shop and asking them to do whatever needs to be done and fix it. Can anyone help? It's a 2000.
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Old Sep 19, 2014 | 12:12 PM
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Originally Posted by RZA
So here my problem. My fuel pump all of a sudden stopped working two weeks ago. I thought it was the relay because I had a friend listen and he heard no click okay the relay by the pump. It's a walbro 450 e85 wired to the battery. Ordered a new relay and out it on expecting it to work. No dice. So I made sure the connection was good on the battery and it was. I followed the wires from the battery to the ecu to everywhere it goes and everything is connected but still no power. I checked the ground that's right next to the pump and it's fine. I can't think of what to do and I'm losing my mind. My next option is getting 1500 dollars and flat bed hauling it to a shop and asking them to do whatever needs to be done and fix it. Can anyone help? It's a 2000.
Did you check the fuel pump fuse?
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Old Sep 19, 2014 | 01:57 PM
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Originally Posted by kryptonite
Originally Posted by RZA' timestamp='1411151618' post='23337621
So here my problem. My fuel pump all of a sudden stopped working two weeks ago. I thought it was the relay because I had a friend listen and he heard no click okay the relay by the pump. It's a walbro 450 e85 wired to the battery. Ordered a new relay and out it on expecting it to work. No dice. So I made sure the connection was good on the battery and it was. I followed the wires from the battery to the ecu to everywhere it goes and everything is connected but still no power. I checked the ground that's right next to the pump and it's fine. I can't think of what to do and I'm losing my mind. My next option is getting 1500 dollars and flat bed hauling it to a shop and asking them to do whatever needs to be done and fix it. Can anyone help? It's a 2000.
Did you check the fuel pump fuse?
The one under the dash? Yes I did. It seems fine. The metal isn't broke.
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Old Sep 19, 2014 | 02:12 PM
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Swap in your stock pump and see if it primes when you turn the ignition. Check your ems map. Don't know how it can affect it but Google around.

Try plugging it back into the stock power lines as well to figure out if its a wiring issue or a pump/ems thing
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Old Sep 20, 2014 | 11:16 AM
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Before going any further, jump the pump with a 12V battery source to see if it works. It may have failed.
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