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There is no power to the 15 amp fuel pump fuse. Relay clicks but no fuel pressure. The fuel pump was recently replaced and the car was working OK


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contributions: 1988
Images: 37
Location: Oregon
if the fuel pump relay clicks and you don't have battery voltage at the fuel/pump 15A fuse try another relay. Check if your relay has the pins numbered on the bottom of the relay. If it does, look at where the pin numbered 30 plugs into the fuse block. Check that hole (connection) for power. It should be Battery (+) all the time. If you have power there then you need to look at whether there is a bad connection through the relay of after the relay but before the fuse. (LOL, you did check both sides of the fuse right? a blown fuse will have no power on one side of the fuse but will have power on the other side) It is possible to have the contacts in the relay burned so that you hear the click when the relay is activated but no power will go through the burned contact inside the relay.


   
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Checked visually and with a light probe on both contacts-no joy. Replaced relay-no joy. The only thing that I can think of is a bad connection in the fuse box assembly unless there is something intermediate such as pressure regulator switch. Anyhow, it's now at a Chevy dealer for their diagnostic and I'm sure the bill is getting thicker and thicker.


   
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contributions: 1988
Images: 37
Location: Oregon
If you checked the relay connection in the fuse block #30 should have power all the time. #87 is the power out of the relay to the fuel pump 15A fuse. You could bypass the relay and add a jumper to prong #87 and the car should start up and run. It does sound like you may have a problem with the fuse block at the right strut tower. Power from #30 should be connected to the main battery feed on the fuse block. the problem is a problem inside the block or there would be a bad connection to the battery cable coming into the block, but then a lot of things wouldn't work.


   
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