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With a signal from the ecm it powers up the fuel pump.

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13y ago
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Q: What does fuel pump relay do on 94 s10 blazer with 4.3liter v6 engine?
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Is there a fuel pump fuse or a fuel pump relay on a 2000 Blazer with a 4.3 engine?

There is a fuse and a relay.


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No, it would not start.


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