Thread: Fuel Pump
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Dave at Pelican Parts Dave at Pelican Parts is offline
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Location: Silly-Con Valley
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The behavior you describe (1 second BUZZ) is normal. That's how the FI starts to build up fuel pressure. The BUZZ is the pump running.

How do you know you are not getting any fuel to the injectors? Mount a fuel pressure gauge (capable of reading at least 35 PSI, up to 50-60 is preferable) to one of the fuel rails (or Tee it into the line from the pump to the right-side fuel rail) and see if you get any pressure at all.

You can pull the fuel pump relay off of the relay board (second from the rear) and jumper between the "forward" connection and the "left-rear" connection. That should force the pump to run ALL THE TIME. Ignition on or not. Don't let it run for more than about 30 seconds, though. I hear it's not great for it to run for a long time without the engine running.

Good luck!

Old 10-14-1999, 05:10 PM
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