[sexypizzaman]

Hey guys, just finished wiring up my BRAND NEW holley electric blue series fuel pump. The fuel lines are not connected yet but I wanted to make sure all my wiring was fine so I gave it power to see if I could hear the motor turn on quickly then I would shut it off. Well it hasn't made any noise and all wiring is good, it is getting a full 12 volts for sure I have tested with my voltmeter and the ground is clean as could be. I guess my question is do these pumps make virtually no noise and it is actually turning on because again I can't hear a darn thing!! Even if I hook it straight up to the battery I don't hear it make any noise. Please help.

[Blazin72]

Hook the fuel lines up and get some pressure in the system to develop a load on the pump and see if you can hear it then. They are loud, unless Holley has made a dramatic change in the three years since I bought my most recent one. I've had a few on various vehicles over the last 10 years or so and all of them were fairly noisy.

The only problem I ever had was when I didn't connect an external voltage regulator to the alternator and I drove around for a week or so with the alternator pumping out as much as 22 volts. Needless to say, the electric fans, ignition box, headlights and fuel pump did not like the extra voltage very much.

If you have an extra person handy have them stick their finger over the inlet to see if you get any suction when you turn it on.

[sexypizzaman]

Will it damage the pump at all to run it without pumping fuel??

[Scode68]

No, it will only hurt it if you run it for a long time.

Could be just a bad pump from Holley?

[Double_v23]

I have my holley blue pump in the trunk, and I can hear it over the exhaust and the noisy gear drive under the hood.

They make a lot of noise. To say the least.

However they might not start making alot of noise until you actually have fuel. But you will definately know that it is on, regardless.

[cool rockin daddy]

any particular reason you are running an electric pump? Holley Blue pump is an obnoxiously loud pump.

[DeathRattle]

Yep they need fuel to make noise....and as everyone said it makes a lot of noise....I know mine does. People always ask what that noise is they think something is wrong.

[sexypizzaman]

would it matter that my pump is moutned sideways?? (Holley recommends mounting it with the motor side on top) I am maybe thinking that there is some sort of integral safety switch that won't allow it to turn off unless the pump is upright (incase the car flipped over or somthing).

[SSedan64]

Originally Posted by sexypizzaman

would it matter that my pump is moutned sideways?? (Holley recommends mounting it with the motor side on top) I am maybe thinking that there is some sort of integral safety switch that won't allow it to turn off unless the pump is upright (incase the car flipped over or somthing).

There's no safety switch. They just want it mounted upright in case you have a fuel leak it want run towards the electric motor. If you wire it up through a relay use a oil pressure switch in between the switch/power and relay. Lose oil pressure or flip car engine stalls and it will cut the pump power.